I'm writing this for my son who is away at school, dealing with a crashed computer. He was playing a game on the computer when suddenly it just shut down, then restarted. Then shut down. Then restarted. He managed to start in safe mode and get his important files, but can't do much of anything else. He can opt to start safe mode with networking, but does not actually get access to the internet. If he tries to start up in regular mode, the computer fails to start a couple of times and then he gets the recovery screen.
He has tried disk scan/repair, but that failed. It was on 13% for about 3 hours, then rather suddenly finished with no other message than 100% complete. The computer restarted and same looping. He's gone to the advanced options and tried going back to a previous build, but that failed. it seems that whatever he tries fails.
This is the message he got when attempting a system restore:
"System Restore did not complete successfully. Your computer's system files and settings were not changed. Details: System Restore failed while restoring the directory from the restore point. Source: AppxStaging Destination: %ProgramFiles%\WindowsApps An unspecified error occurred during System Restore. (0x80070091)"
Any suggestions on where to go from here?