How to Fix “Unknown hard error” on Windows 10

Unknown hard error popup message can occur while playing a game, opening or closing applications, executing any file, automatic Windows updates, or doing just about anything on your system.

Here is what few people complained about this error – the screen turned black, taskbar froze, desktop icons disappeared.

Before you try out any solution to this error, it is important to understand the exact cause – which application is responsible for this error? For example, the unknown hard error could be caused by explorer.exe, sihost.exe, ctfmon.exe or other .exe files. Once you find the culprit behind the issue, you can uninstall that application temporarily or go for an update.

The Unknown hard error can also be caused by corrupted system files or registry entries.

Let us check out a few solutions to this error.

Fix “Unknown hard error” on Windows 10

  1. Do a clean boot of the system

If a software conflict or any problematic software caused the Unknown hard error, the clean boot is the ideal solution.

  • Press Windows +R button to open the Run window.
  • Now type msconfig in run prompt and hit Enter.
  • On System Configuration window, open Services
  • Now check Hide all Microsoft services box and select Disable all.
  • Open Startup tab and click Open Task Manager.
  • Click on each startup item and select Disable.
  • Close Task Manager and click OK on System Configuration window.
  • Reboot the system.

If this method solved the error, enable all the services one by one to find out which item caused this problem.

  1. Revert recent Software updates

If you find out that particular software or program caused this error, you can uninstall it and reinstall it later.

  1. Using CHKDSK command

If your hard drive is damaged, it can cause an Unknown hard error and other blue screens of death errors.

Use CHKDSK command to get rid of this error:

  • Press Windows + R button to open Run window.
  • Type cmd in the run prompt and click OK.
  • Type CHKDSK H: /F /R and hit Enter. You can replace “H” with your hard drive letter.

Checkdisk utility will scan for errors and fix them.

  1. Run sfc /scannow
  • Press Windows + R button to open the Run window.
  • Type cmd in the run prompt and click OK.
  • Type sfc/scannow and hit Enter.
  • Once the scan is completed, you can see a list of programs found and their status (fixed or not fixed).
  • Type chkdsk /f/r and hit Enter.
  • Checkdisk will fix all issues.

  1. Repair Drivers
  • Click the Start
  • Type Device Manager in the search bar and select it from search results.
  • Expand one of the categories to find the name of your device. Right-click it and select Update Driver.
  • Select Search automatically for updated driver software.

If Windows doesn’t return an appropriate driver, you can search for it on the device manufacturer’s website and follow their instructions.

Data Recovery using Remo Recover software

If there was any data loss while trying out any of the above methods or otherwise, you can try the ever-reliable Remo Recover software to restore all your data.

Remo Recover tool comes with a user-friendly interface supported by FAT16, FAT32, NTFS, NTFS5, and ExFAT file systems. This Data Recovery tool easily scans the entire storage drive to locate deleted data and sorts it based on the file name, date of creation, size, and extension.

Download the software, follow simple on-screen instructions and your data will be back in just a few clicks!

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The data recovery software can recover data from lost, deleted formatted or re-formatted drives or partitions as well.
Additional Note: Click here to know how to recover files after format.

How to Fix “Unknown hard error” on Windows 10 was last modified: June 17th, 2020 by John Harris

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