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When your Seagate hard drive not working, it is usually about external hard disk not detected, not recognized, or not showing up. This article has the most comprehensive solutions to Seagate internal and external hard drive not working problems on both Windows and Mac. In the final part, you can learn how to recover data from a Seagate (external) hard drive which is not detecting by EaseUS hard drive recovery software.

Connect the external hard drive to your Mac and copy the important data to the Mac PC. Now connect the external hard drive to Windows 8 computer and format it in FAT32 file system. Now you would be able to use the external hard disk on both the computers. Also refer to this link: Drives, partitions, formatting w/Mac's + PC's. First things first, check if the Seagate external hard drive that is not showing up Mac is properly plugged in to the USB port. It is one of the most notable reasons when Mac fails to mount the drive. If you are using an older Mac ensure that the drive is receiving enough power supply. Click and drag the disc drive icon from the desktop into the trash bin. Eject from Context Menu. Hold down the Control button on your keyboard and click the disc drive icon on the desktop. Select Eject from the context menu. Eject from Finder. Locate the disc drive. Then if it is still not working, Contact Apple Supportor your local Apple Authorized Service Provider and make an appointment to have the CD/DVD Drive serviced.

Is your Seagate external hard drive suddenly not working? This page explains the reasons why your Seagate and other brands of external hard drive not working, not detected, or not showing up, and the fixes to repair external hard disk without losing any data.

Follow the content navigation and pick up the right methods to make your Seagate external hard drive work again:

Also applies to: Fix Seagate external hard drive not showing up, external hard drive not detected, Seagate external hard drive light blinking but not work, Seagate external hard drive not recognized Widows 10, USB not showing up, etc.

Error: Seagate External Hard Drive Not Working

'My 1TB Seagate external hard drive cannot be detected by my computer but the light is blinking, what can I do to fix this? I need to get my data back. I use it as a backup so pretty much all of my personal and work files are stored in the drive. Please help me out.'

Seagate external hard drive not working or not detected issue is top concerned among worldwide Seagate users. Normally, the external hard drive should be detected by the Operating System and viable for storing all types of files, without the need for drivers, software, or firmware updates.

However, each drive has its own issues after long-term use or possibly improper use. So the first step that you should take is to find out the reasons why your Seagate disk cannot be detected by a computer. Then, you can follow the presented solutions in the following parts to repair Seagate external hard disk not working issue without losing any data.

Let's start the journey and follow the tutorials below to make your Seagate, Toshiba, Sandisk, etc., external and internal hard drive work properly again.

Why Is Seagate External Hard Drive Not Working/Detected

Generally, 'Not Working' is a state that usually describes a malfunctioning hard disk or external hard drive. For example, you may define your Seagate external hard drive 'not working' as it's not accessible or detected after connecting it to your computer. Or, even you correctly connect it to a computer, it doesn't show up in the drives list in Windows or Mac computer.

So, what caused your external hard drive malfunctioning? Both software and hardware issues may cause a hard drive not working as usual. Here is a list of commonly explored reasons related to this issue:

• Incompatible file system
• File system corruption, Invalid file system, RAW
• The drive turns to unallocated
• Disk drive letter conflict
• Hard drive driver is corrupted or out of date
• The hard drive has too many bad sectors
• The hard drive is damaged, dead, not spinning up

How to Fix Seagate External Hard Drive Not Working in Windows

Applies to: Troubleshoot Seagate external hard drive not working, not detected issue in Windows 10/8/7.

If you tried the above-presented hardware troubleshooting tips but the Seagate external hard drive is still not working, don't worry. You can open disk management to check the state of your external hard drive and refer to the right solutions as presented below for help:

Fix 1. Try a Different USB Port, Connection Cables

Applies to: All types of storage devices that are not working, not showing up or detected in both Windows and Mac computers.

So how to repair Seagate hard drive that is not detected by the computer? Here is a list of basic hardware troubleshooting that you may first try to improve the chance of success in making the hard drive or external hard drive work again:

• 1. Try a different USB port on the computer.
• 2. Switch a new cable if the current one is damaged.
• 3. Try connecting the drive to a different computer.
• 4. Verify if the drive's light is on. (No light could indicate the power adapter is not connected to power.)
• 5. Try a different power outlet. (Desktop Drives)

After following these tips, if your Seagate external hard drive is still not detected, move on and try the other solutions offered here.

If Seagate is detectable but inaccessible, jump to recover Seagate disk data first as presented at the end of this page. Then revert to this part to fix Seagate disk to workable again.

Fix 2. Format RAW Seagate External Hard Drive to NTFS

Applies to: Format RAW Seagate external hard drive, change invalid file system on Seagate disk to a supported one, like NTFS.

When a hard drive's file system turns to RAW, it won't show up in my computer. Also, if your Seagate external hard drive contains an unsupported file system, the drive won't be able to work normally on your computer.

In this page, You need to format the RAW drive to a file system that Windows recognizes, such as NTFS, FAT32 or exFAT.

Step 1. Connect the Seagate external hard drive to your PC and open Disk Management.

Step 2. Right-click on the not working RAW drive and select 'Format'.

Step 3. Set volume label, set NTFS as the file system and tick 'Quick Format'. Click 'OK' to start the formatting.

Fix 3. Change Seagate Drive Letter

Applies to: Fix Seagate external hard drive not showing, detected, recognized issue due to drive letter conflict.

Note that, sometimes, if your external hard drive shares the same drive letter as your disk partition, Windows won't show the drive letter of your external device. It will show as New Volume in Disk Management without a drive letter.

And this is why your external hard drive not detected. To fix this issue, you'll need to add a new drive letter to your Seagate disk. Here are the steps:

Step 1. Connect Seagate external to computer and open Disk Management.

Step 2. Right-click the partition of not working Seagate disk and choose 'Change Drive Letter and Paths.'.

Step 3. Set a new drive letter to the Seagate disk and click 'OK' to confirm.

Fix 4. Restore Partition or Create a New Partition on Unallocated Seagate External Disk

Applies to: Fix unallocated Seagate external hard drive not working issue.

Sometimes, you may not be able to use the Seagate external hard drive if the device shows as unallocated in Disk Management, as shown below:

To make your unallocated Seagate drive show up and recognized again, you have two options:

#1. Restore Lost Partition and Data from Seagate Unallocated Space

If you had partition and data saved on the Seagate external hard drive which suddenly became unallocated, you may directly apply reliable partition recovery software for help. It will scan and recover all lost partition and data from the unallocated space.

Step 1: Run EaseUS Partition Recovery on your PC.

Select the disk or device where you lost partition(s), click 'Scan' to continue.

Step 2: Wait for the scanning process to complete.

Let the program scan the selected disk and find the lost partition(s).

Step 3: Preview and restore the lost partition(s).

Double-click on the partition which is marked as 'Lost' with 'Good' recoverability.

Preview the content of the lost partition. Click 'OK' and click 'Proceed' to start restoring the lost partition.

Step 4: Click 'Recover Now' to finish the partition recovery process.

Note: If the program warns you that there is a conflict, back up the listed partition with essential data to an external hard drive first. Then execute the final operation to restore your lost partition.

#2. Create a New Partition on Unallocated Seagate External Disk

If you don't have any valuable data on the not detected Seagate external hard drive, you may directly use Disk Management to create a new partition on the drive with the following steps:

Step 1. Connect the unallocated Seagate external hard drive to PC and open Windows Disk Management.

Step 2. Right-click on the unallocated partition and choose 'New Simple Volume.'.

Step 3. Set partition size, drive letter, and file system such as NTFS, etc., click 'OK' to confirm.

Step 4. Click 'Finish' to complete the process.

Fix 5. Uninstall and Re-install Seagate Hard Drive Driver

Applies to: Fix Seagate external hard drive not working error due to outdated drive driver.

Mostly, when the respective hard drive or external hard drive driver is outdated, Windows computer will have a problem of showing it up. So the best solution toward this issue is to update the Seagate drive driver immediately.

Be careful with the following four steps, you will resolve the unrecognition problem of the Seagate external hard drive on your own:

Step 1. Connect the not working Seagate external hard disk to PC.

Step 2. Press Windows + X keys or right-click Windows icon and select 'Device Manager'.

Step 3. Expand disk drivers and right-click on your external hard drive, select 'Uninstall Device'.

Step 4. Select 'Search automatically for updated driver software' and restart PC when the process completes.

Fix 6. Turn on USB Root Hub

Applies to: Fix Seagate external USB not working issue due to disabled USB Root Hub.

Sometimes, USB external hard drive devices may stop functioning correctly when multiple devices connected to the same USB hub go into selective suspend.

By enabling the USB root hub, the controllers will recover the USB port from its unresponsive condition so to make your device work normally again:

Step 1. Connect not working Seagate external hard disk to PC.

Step 2. Open Device Manager and expand 'Universal Serial Bus controllers'.

Step 3. Right-click USB Root Hub > Click 'Properties' > 'Power Management'.

Step 4. Uncheck 'Allow the computer to turn off this device to save power' and restart PC.

Fix 7. Show All Hidden Devices

Applies to: Fix Seagate external hard disk not showing up, not detected issue.

Sometimes it's because the connected drive is hidden, not showing up in my computer. Simplyweather 1 0 1. You need to unhide the device and make Seagate external hard drive shows up in the Windows Device Manager.

Here are the steps:

Step 1. Press Windows + R keys, type: devmgmt.msc and hit Enter.

Step 2. Click 'View' > Select 'Show hidden devices'.

Step 3. Expand all notes by clicking on the + (plus) symbol.

Step 4. If there are any grayed-out entries, right-click them, and select 'Uninstall'.

Step 5. Reboot PC and check if you can see your Seagate external hard drive.

Fix 8. Run a Virus Cleaner Software

Applies to: Fix virus or malware infection that cause Seagate device not working.

If it is a virus that caused your external hard drive to be undetectable or unrecognized, you can try a virus cleaner software to wipe out and remove any viruses from your PC and hard drive.

Step 1. Download and install an antivirus software on your computer.

Step 2. Connect Seagate external hard drive to your PC.

Step 3. Launch the antivirus tool and scan to remove virus or malware from Seagate drive.

Afterward, you can format the hard drive to make it readable again. Remember to run a reliable data recovery software to scan and find all your valuable data on the Seagate device before formatting.

How to Repair Seagate External Disk Not Working/Detected in Mac

Here we collected 3 troubleshooting for you to follow and repair the Seagate disk to work normally again on your Mac:

Before you go further, check Seagate disk in Disk Utility or System Information/Profiler section:

• If the drive is not showing on your desktop or within Finder check Disk Utility: go and open Finder > Applications > Utilities > Disk Utility
• If the drive is not detected in Disk Utility then see the System Information/System Profiler section.
• If you are using macOS 10.13 or higher then click view in the upper left and select 'Show All Devices' which allows you to see both the disk as well as volumes.

If all the attempts failed to display the Seagate drive on your Mac, go on with the 3solutions.

Fix 1. Format Seagate Disk to macOS Supported File System

Applies to: Fix Seagate external hard drive not working or not detected error due to Mac unsupported file system.

If you switch NTFS Seagate external hard drive to a Mac computer, it won't show up nor work on Mac. The reason is that Mac is only compatible with APFS, FAT32, exFAT, etc., formats.

So to fix this issue, you'll have to format the drive to FAT32 or exFAT. For a step-by-step guide, you may refer to: Format External Hard Drive to FAT32 for help.

Fix 2. Repair Seagate External Hard Drive in First Aid

Applies to: Mount Seagate external disk to make it work on Mac.

If the Seagate drive is unmountable or the Mount icon is greyed out, it could be some disk errors that prevent your Mac from recognizing/detecting the drive correctly. You can repair the problematic drive in the built-in First Aid utility.

Step 1. Click on the Launchpad on the Dock and find Other.

Step 2. Locate Disk Utility and open it.

Step 3. Select the unmountable Seagate external hard drive in the left sidebar and choose First Aid at the top.

Step 4. Click 'Run' to repair this Seagate hard drive.

Fix 3. Reformatting Unmountable Seagate External Hard Drive

Applies to: Fix corrupted file system on Seagate external hard drive that cause it not working on Mac.

If the file system on your Seagate hard disk is corrupted, it won't work nor be detected. In this case, reformatting a corrupted drive is the most instant way to revive it.

Let's see how to reformat and make the Seagate external hard disk work again on Mac:

Step 1. Go to Applications > 'Utilities' > Double click and open 'Disk Utility'.

Step 2. Select your Seagate external hard drive on the sidebar, choose 'Erase'.

Step 3. Rename the drive, choose the format as MS-DOS (FAT) for Format, Master Boot Record for Scheme. Then click 'Erase'.

After trying the above presented methods, you should be able to use your Seagate external hard drive to transfer or save data again on both Windows and Mac computers. However, as some of these solutions may cause file loss issue.

Therefore, if your Seagate disk data lost after making it work normally again. Don't worry. You can continue with the data recovery tutorial in the next part to bring all your lost files back immediately.

Bonus Tip: Recover Data from Seagate Drive after Making It Work Again

Applies to: Recover inaccessible or lost files from Seagate external hard drive or USB after making it work again.

After getting your hard drive to be recognized once more, you should check to see whether any files were lost. Files could have been lost due to the drive becoming unreadable, or from fixing this issue.

• If you have backups of your Seagate external hard drive data, you can directly restore those lost files from your backups.
• If you have no backups, here the best hard drive recovery software will help you.

EaseUS Data Recovery Wizard enables you to restoring unlimited data from your Seagate external hard drive in three simple steps. If you're a Mac users, download the Mac version and apply it to help.

Let's see how to fully restore all data on your Seagate external hard drive within only a few simple clicks:

By going through three short stages, you can easily find lost data on a Seagate external hard drive.

Step 1. Under the 'External Devices', you should see the Seagate external hard drive showing up after it's correctly connected to your computer. Select the drive and click the Scan button.

Step 2. Soon, the software will find more and more data and display the data in the scan results. Muppet show logo font.

Step 3. You can use the Filter feature to quickly locate some specific file types in the results. Select the target files and click the Recover button.

To recover Seagate external hard drive data on Mac, you may refer to: External Hard Drive Data Recovery on Mac for help.

Save your recovered data to another location other than the external storage device. It is recommended that you reformat this Seagate drive to make sure it's secure for storing new data again.

Sum Up

On this page, we explained why is your Seagate external hard drive suddenly doesn't work or not detected by Windows or Mac computers. We also offered respective solutions to repair not working Seagate external hard drive with reliable data recovery software to retrieve all precious data from your disk.

Note that although most of these suggested solutions work to repair device not showing up, not detected, or even not working issues, but it's not the best way out.

In order to avoid further data loss, we suggest you create regular backup of your valuable data to another location frequently. Also, forming up the habit of using antivirus software is also a key point to protect your data and privacy.

Whenever you encounter data loss issue, always remember to let EaseUS Data Recovery Wizard help.

This article provides you with 100% working methods to fix 'external hard drive not working/responding error' without losing any data. If your external hard drive is not working, fails to respond or becomes undetectable, download EaseUS disk data recovery software here with 100% working methods to repair your not working external hard drive in Windows 10/8/7 PC and restore data now.

An external hard drive is a device that used to back up your most important files and data, but if it suddenly stops working or responding, don't worry. On this page, we'll focus on the external hard drive not working issue and you'll learn：

Applies to: Fix external hard drive, USB drive, SD card, internal HDD/SSD, etc., not working or responding error on Windows PC.

Quick Guide - Fix External Hard Drive Not Working/Responding Error in 3 Parts:

No matter what brands of devices you are using such as WD Elements external hard drive, Seagate external hard drive, SanDisk or Toshiba hard disks, etc, just follow this article to get your problem solved with the provided methods here now.

Causes of External Hard Drive Not Working/Responding

Is your external hard drive suddenly not working for no reason? Is your external hard drive suddenly cannot be detected or recognized by your PC or laptop? Relax!

You don't have to buy a new external hard drive and give up all the precious data. First, check the causes that make your external hard drive not working:

• Problematic connection
• RAW, invalid or unsupported file system
• Drive letter conflict or no drive letter
• No partition
• Not initialized
• Outdated disk driver
• USB Root Hub is outdated
• Disk is physically damaged
• .

Don't worry if you don't know what exactly causes your external hard drive not working. Continue reading, we've collected 100% working fixes here to help you fix the external hard drive to work normally again without losing any data.

Part 1. Make Not Working External Hard Drive Detectable

Applies to: Fix external hard drive not showing, not detected error due to connection problem.

Mostly, when your external hard drive suddenly doesn't work or fails to show up on your computer, you should first check the device connection between your external disk and your computer.

Now, follow to make the not working external hard drive detectable and show up on your PC again:

#1. Check and Change External Hard Drive Connection Cable

The first thing that you should do is to check the external hard drive USB connection cable:

• If the connection cable is loosened, reconnect external disk to PC and tight it.
• Is the external USB connection cable broken or damaged, switch a new cable, and reconnect the disk to PC.

#2. Change a USB Port or Connect to a New Computer

Imagej mac catalina. If the USB connection cable is not broken, try to reconnect the external drive to your PC via a new USB port and check if the computer detects your disk.

If still nothing shows up, change a computer and reconnect the external drive.

#3. Check Power Management for USB Hub

If it doesn't work after changing the USB port or cannot be read by a new PC, try the quick fix below to repair an unrecognizable external hard drive:

Step 1. In Run (Windows + R), type devmgmt.msc and hit Enter.

Step 2. Open Device Manager > expand 'Universal Serial Bus controllers'.

Step 3. Right-click USB Root Hub > Properties > Power Management > uncheck 'Allow the computer to turn off this device to save power'.

After following the above 3 tips, your computer should be able to detect and recognize your external hard drive now. You can try to open the drive and access the data.

If you still cannot access the data, don't worry. Move to Part 2 and we'll offer you the best hard disk data recovery software to help you quickly access and restore all valuable data on immediately.

Part 2. Recover Data Before Fixing External Hard Drive With Not Working Error

After making the external hard drive detectable, we suggest you recover data from the drive first as some measures may bring secondary damage to your data on the disk. After this, we'll offer you some reliable methods to fix the external hard drive in the next part.

3 Steps to Recover Data from External Hard Drive

To recover data from your external disk, you'll need reliable HDD recovery software for help.

EaseUS Data Recovery Wizard with its powerful capacity allows you to scan and recover data from the external hard drive which is not working properly in only 3 steps.

See how to restore data from the external hard drive on your own: Discovery 3 3 0 v6 tdi.

Step 1. Choose the external hard drive

Since you're going to recover data from the external hard drive, run EaseUS Data Recovery Wizard and under the External Devices tab, choose the exact drive where you lost data. Click Scan.

Step 2. Scan for lost data

The software will start immediately to scan all over the selected drive for all lost data. During the scan, you could see more and more data showing up in the results.

Step 3. Preview and recover data

After the scan is over, check the scan results for the desired data. You can preview the file by double-clicking on it. Click Recover and choose another location to save the recovered data.

Don't save the recovered data on your external hard drive before fixing and making it work normally again.

Part 3. How to Fix 'External Hard Drive Is Not Working/Responding' Error

Let's see how to repair the not responding external hard drive or undetectable external hard disk drive now.

To help you find the right fix for the 'external hard drive not working' error in Windows 10/8/7, please open Disk Management and check the state of your external hard drive:

1. #1. Check and Fix Disk Errors on External Hard Drive - Disk Contains Corrupted File System Error
2. #2. Format External Hard Drive to NTFS - Disk Shows RAW or Unsupported File System
3. #3. Create A New Partition in External Hard Drive - Disk Displays as Unallocated
4. #4. Assign a New Drive Letter to External Disk - Disk Shows as 'New Volume' with No Drive Letter
5. #5. Initialize External Disk and Create a New Volume - Disk Is Unknown, Not Initialized

Method 1 to Method 7 can fix most external hard disk not working issue, and if none of them work, turn to Method 8 and Method 9 for help. Let's start the external hard disk repair process.

Method 1. Check and Fix Disk Errors on External Hard Drive

Applies to: Fix external hard drive not working due to unknown disk error or corrupted file system.

Mostly, when an internal or external hard drive contains an unknown error or corrupted file system, the Windows computer will not be able to detect or open the drive.

Here you have two options to check up the disk and fix internal errors on a not responding external hard drive:

Option 1. Run Partition Manager Freeware to Fix External Hard Drive Not Responding Error

Download and install EaseUS Partition Master Free on your PC.

Step 1: Open EaseUS Partition Master on your computer. Then locate the disk, right-click the partition you want to check, and choose 'Check File System'.

Step 2: In the Check File System window, keep the 'Try to fix errors if found' option selected and click 'Start'.

Step 3: The software will begin checking your partition file system on your disk. When it has completed, click 'Finish'.

Option 2. Run CMD to Manually Fix External Hard Drive Errors

Step 1. Type cmd in the Search box, right-click to open Command Prompt.

Step 2. Type diskpart and hit Enter.

Step 3. Type chkdsk /f /r /x g: and hit Enter to let the checking process to run.

Replace g with the drive letter of your external hard drive.

Step 4. When it's finished, type: exit and hit Enter to finish the process.

After this, your not responding external hard drive should now show up. If it still doesn't work, go on with an easier chkdsk alternative.

Option 3. Run CMD Alternative to Fix External Disk File System Error

The Command line is suitable for computer professionals since wrong commands can cause severe problems. Therefore, we strongly recommend you try EaseUS Tools M.

It is a practical computer fixing tool that is safe and light-weighted. To fix file system error or disk error:

If you don't have any technical know-how and want to minimize data risks, using third-party software could be a better choice. The Command line is suitable for computer professionals since wrong commands can cause severe problems. Therefore, we strongly recommend you try an automatic command line alternative.

EaseUS Tools M is a practical computer fixing tool that is safe and light-weighted. It's a perfect alternative to CHKDSK command. Use this one-click tool to solve your computer issues.

To fix file system error or disk error:

Step 1: DOWNLOAD EaseUS Tools M for Free and install it.

Step 2: Open the software and select the 'File showing' option.

Step 3: Choose the drive and wait for repairing. After the operation completes, click the 'View' button to check the drive.

Method 2. Format External Hard Drive to NTFS to Repair Not Working External Disk

Applies to: Fix external hard drive not working, detecting or responding error due to RAW or unsupported file system.

If your external or internal hard disk shows as a RAW or unsupported file system in Disk Management, the best way is to format the disk to a recognized format.

In order to make sure that the external hard drive is secure for storing new data again, you can format it to repair the not working drive to be usable again with Windows disk management:

Step 1. In Run (Windows + R), type diskmgmt.msc and hit Enter.

Step 2. Go to Disk Management, right-click the external hard drive, and select 'Format'.

Step 3. Choose a file system like NTFS or exFAT and tick 'Quick format'. Click 'OK' to start the formatting.

After this, your external hard drive is viable for saving data again.

Method 3. Create A New Partition in External Hard Drive

Applies to: Fix disk displays as unallocated in Disk Management that make external hard drive not working.

Mostly, when your external hard disk shows as unallocated, it means that there is no partition in the disk. As a result, the computer cannot recognize it. To fix this issue, you need to first recover data from the disk first (as shown in Part 2).

Is my mac compatible with el capitan. Then, you can follow the steps below to create a new partition, making the external hard drive working again:

Step 1. Connect the unallocated external hard drive to your PC and open Disk Management.

Step 2. Right-click on the unallocated space of the external hard drive, select 'New Simple Volume'.

Step 3. Set partition size, drive letter and file system (NTFS), etc.

Step 4. Click 'Finish' to complete the process.

Method 4. Assign a New Drive Letter to External Disk

Applies to: Fix disk shows as 'New Volume' with no drive letter that causes external hard drive not responding.

Step 1. Go to Disk Management and right-click on your external hard drive.

Step 2. Go and select a new drive letter by clicking 'Change', and click 'OK' to confirm.

Then not responding external hard drive can be read and detected now.

Method 5. Initialize External Disk and Create a New Volume

Applies to: Fix 'Disk Is Unknown, Not Initialized' that cause external hard disk not working nor showing up.

Step 1. Right-click 'My Computer' > 'Manage' to run Disk Management.

Step 2. Here, right-click the Unknow external hard drive and click 'Initialize Disk'.

Step 3. Select the disk(s) to initialize and choose MBR or GPT partition style, and click 'OK' to confirm.

How to use the wd my passport for mac. Now the drive is recognized as unallocated and if you have vital data saved there, revert to Part 1 and apply EaseUS data recovery software for help.

Step 4. Then right-click on the unallocated space on your external hard drive and create a new volume on it.

Method 6. Update Disk Driver

Applies to: Force not responding external hard drive to show up and work by updating disk drivers.

Step 1. Right-click 'This PC' and choose 'Manage'.

Step 2. Click 'Device Manager' then expand 'Disk drives'.

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Step 3. Find and right-click the problematic external drive and select 'Update driver'.

Step 4. Click 'automatically search for driver software online'.

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Step 3. Find and right-click the problematic external drive and select 'Update driver'.

Step 4. Click 'automatically search for driver software online'.

Method 7. Uninstall Universal Bus Controllers

Applies to: Fix external hard drive not working issue by updating Universal Serial Bus controllers drivers.

Step 1. Open 'Device Manager', find and expand Universal Serial Bus controllers

Step 2. Right-click on the USB controllers of your external drive and select 'Uninstall device'.

Step 3. Repeat to uninstall each USB controller one by one. Then restart the computer.

While rebooting PC, Microsoft will automatically reinstall the USB controllers software for your not working external hard drive.

Method 8. Run Antivirus Software

Applies to: Fix virus or malware that causes your external hard drive not working.

Sometimes, viruses or malware infections may also cause your device to malfunctioning. So it is to your external hard drive. When you tried all the above fixes, but the drive is still not working, you can try to run antivirus software to unlock the drive:

Step 1. Install and run antivirus software on your computer.

Step 2. Scan and unlock the external hard drive.

Step 3. Wait for the cleaning process to complete and restart PC.

After this, reconnect your external hard drive to the computer and check if you can use it again.

Method 9. Turn to External Hard Drive Manufacturer or Repair Center for Help

The last option that you can try is to contact your external hard drive producer or a local disk repair center for help. It could be the outdated firmware or disk driver that is outdated. For this issue, your disk support team can resolve and make your disk work again.

As for external hard disk data recovery, a local disk repair center or manual data recovery service can do. Here you may also try EaseUS Data Recovery Service.

To Sum Up

On this page, we explained the causes of external hard drive not working, not responding, and not detectable error. To make things easy for you, we divided the whole process into 3 parts:

Part 1. Make external hard drive detectable; Part 2. Recover data from the external hard drive; Part 3. Fix not working external hard drive with respective solutions.

The methods offered in this article can also be applied to repair and fix SD cards, memory cards, USB drives, flash drives, or hard drive partitions, etc devices with not responding/working or undetectable issues.

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It's recommended that you should create an extra backup of your files to another secure location, like Cloud drive. When you lost data on your disk, always remember to let EaseUS Data Recovery Wizard help.