@martin-smith Can you give us a screenshot of the crash details from the Windows Reliability Monitor?
You can also try to reset the program settings by holding SHIFT and CTRL and then starting the program. Keep holding the keys until a small window appears that will ask you if you want to reset the settings and cache.
@martin-smith Thanks, crash in ntdll is often caused by driver problems.
Is your Windows installation ok? Here is a step-by-step guide to check it's integrity and to repair it:
System File Checker is a utility in Windows that checks for problems with files on your computer. To run it, follow these steps:
Make sure you've installed the latest updates for Windows, and then restart your machine. To find out more, read Update Windows.
In the search box on the taskbar, type command prompt, and right-click or press and hold Command Prompt (Desktop app) from the list of results. Select Run as administrator, and then select Yes.
Type DISM.exe /Online /Cleanup-image /Restorehealth (note the space before each "/"), and then press Enter. (Note: This step may take a few minutes to start and complete.)
After you see a message that says "The operation completed successfully," type sfc /scannow (note the space between "sfc" and "/") and press Enter.
After you see a message that says, "Verification 100% complete," type exit and press Enter.