Welcome to TSF. :wave:
Sounds like your computer is overheating.
Unplug the computer from the wall and open the case.
Remove all dust inside with canned, compressed air.
Make sure the fans and heatsinks are clean.
Also - run chkdsk on the hard drive:
Right click the drive in "My computer" >> Properties >> Tools >> Check now. Tick both options and click "Start":
Sounds like your computer is overheating.
Unplug the computer from the wall and open the case.
Remove all dust inside with canned, compressed air.
Make sure the fans and heatsinks are clean.
Also - run chkdsk on the hard drive:
Right click the drive in "My computer" >> Properties >> Tools >> Check now. Tick both options and click "Start":
