Hello Simon,
Thank you for posting your query on Microsoft community.
Sorry for the Inconvenience caused with Windows 10.
Are you facing this issue in local account or Microsoft account?
If you are using a local account, you may sign-out from the current user account and login to the Microsoft account and check.
http://windows.microsoft.com/en-us/windows-10/getstarted-microsoft-account
If the issue still persists, I suggest you to perform System File Checker (sfc) scan and check.
System File Checker is a utility in Windows that allows users to scan for corruptions in Windows system files and restore corrupted files.
To perform SFC Scan, refer to the below link:
https://support.microsoft.com/en-us/kb/929833
Note: Steps mentioned for Windows 8/8.1, will work fine with Windows 10.
If it doesn’t solve the issue, Let us try to run the Deployment Image Servicing and Management command (DISM).
It detects incorrect manifests, cabinets or registry data, it may replace the incorrect data with corrected version available.
1. Press Windows key + X.
2. Click command prompt (Run as administrator).
3. In the Administrator: Command Prompt window, type the following commands. Press
Enter key after each command:
DISM.exe /Online /Cleanup-image /Scanhealth
DISM.exe /Online /Cleanup-image /Restorehealth
To close the Administrator: Command prompt window, type Exit, and then press
Enter.
If SFC and DISM commands did not resolve the issue, I suggest you to place the Desktop system in Clean Boot and check if the problem exists.
This helps eliminate software conflicts that occur when you install a program or an update or when you run a program in Windows. It starts Windows by using a minimal set of drivers and startup programs.
How to perform a Clean Boot in Windows:
http://support.microsoft.com/kb/929135
(The above link also applies to Windows 10)
Note: After troubleshooting, refer to this section "How to reset the computer to start normally after clean boot troubleshooting" in the above link.
Windows Update may have updated drivers available that may be relevant to your current issue. Many times, updated drivers are listed in the "Optional" section of Windows Update.
Review Windows Update: The Windows Update service is a key item to review. Windows Update may have updated drivers available that may be relevant to your current
issue. Many times, updated drivers are listed in the "Optional" section of Windows Update. Install any pending updates on the PC to check if that helps.
1. Press Windows Key.
2. Select Settings.
3. Click on Update and security and click Check now.
4. Follow the prompts to install all recommended and optional updates.
Hope the information helps. Do reply if you need further assistance, we will be happy to help you.
Thank you.