MSI laptop Win 10
No issues over last 3 years. Boot up today and MSI splash screen just hangs.
Shut down and restarted. It went to Repair/'Diagnosing your computer' where it's been for the last 90 minutes or so.
Tried F8 but still went to diagnosing. Remembered that with MSI F2 is the key to access Safe Mode and other tools.
But, again, no response. Just went to Diagnosing Your Computer.
How long might this run or is it likely just hanging?
As a novice I was wondering if there was a novice-friendly way (maybe via flash drive) to boot to my desktop to:
1) recover files and/or
2) fix any issues that might be causing this problem.