My XPS 8500 desktop running on windows 10 seems to get stuck on a Windows update and then gives an error message that no bootable device can be found. After inactivity during vacation and unpugging and moving my computer it worked fine again for one time and then the same problem started again.
When restarting, an update seems to be installed, but after 15 to 20 minutes it gets stuck
Running Dell diagnostics showed no problems
Starting from the Dell operating system disk worked once, but setting Windows back to original settings while keeping my files gave an error message that no bootable device could be found. Attempting to restart with the disk failed so far.
I'm out of clues what to try next, any ideas are welcome