In some cases, Window 10 does not recognize the hard drive, so to fix this issue the user can connect their external hard drive to USB port. But if the customer requires assistance, then go to office.com/myaccount.
Method To Fix If External Hard Drive is Not Showing Up On Window 10/11:
- Manually Update Drivers:
To update drivers, first you need to hold Win + X key at the same time and then from the list, you need to select Device Manager. After this, you have to find the Disk drives section and then expand it. Here, you need to verify the listed devices have a yellow exclamation mark just next to them. If you find an exclamation mark next to your device, then it is possible that there is a driver issue. Now, you need to right-tap on the device and then select Update Driver. In the end, you need to choose the option of Search automatically for driver software.
- Change Portable Hard Drive Letter and Then Format it:
Change Drive Letter:
If the user wants to change drive letter, then they have to hold Win + X key at the same time and then from the menu, you need to select Disk Management. After this, you have to find the portable hard drive in Disk Management and then right-tap on it. Here, you need to select Change Drive Letter and Paths. Now, a new window display with the current letter of the hard drive. At this point, you have to tap on Change and then select a new letter for it. Keep in mind select the letter which you are not using for another drive. Then, you will view a dialog box which confirms you want to change the letter of the drive. At last, you need to tap on Yes button to change the drive letter.
Format Portable Drive:
For formatting, you have to right-tap on the Start icon and then open Disk Management. After this, you should right-tap on portable hard drive and then from the menu, select Format. Now, you need to input the label for your hard drive, and then select File system type. At last, you need to tap on OK button and just wait so that the portable hard drive is formatted.
- Run Hardware Troubleshooter:
To run hardware troubleshooter, you need to tap on Win + R key together to open the Run console. After this, you need to write the command and then tap on Enter key to open the Hardware and Devices troubleshooter:
msdt.exe -id DeviceDiagnostic
At this point, you should press Next button to begin the troubleshooting process. At last, you have to follow the instructions to finish the troubleshooting process.
- Uninstall Problematic Drivers:
The user should right-tap on the Start button and then opens Device Manager. After this, you need to find the portable hard drive and then right-tap on it and then select Uninstall device from the menu. Here, you should tap on Uninstall option to remove the driver. At this point, you should hit on Scan for hardware changes icon. At last, you will find that the Windows will install the default drivers for the hard drive.
- Install Mass Store Device driver:
To install the device driver, you need to right-tap on the Start button and then choose Device Manager. Now, you have to find the portable hard drive and then right-tap on it and then select Update driver. Here, you need to choose Browse my computer for driver software. Then, you should choose Let me pick from a list of available drivers on my computer. In the end, you need to choose the Mass Storage Device driver and then install it.
- Inspect Portable Hard Drive:
In case, Windows 10 can’t recognize the hard drive, then you should do few things before you use it. You can ensure that the hard drive is turned on, the user can connect the drive to a different port or you can directly connect the hard drive to your computer.
Through this way, the customer can fix External Hard Drive is not showing up on Window 10. For help, navigate to www.office.com/setup.
more info this link: How To Fix If Window 10/11 Keeps Forgetting Your Network Credential?