Go to system tools and run disk clean up and defragment and see if that helps.I'd even scan it for a virus.Ultimately you will probably have to reinstall everything.I woke up today & go on my PC & it messed up. It says...
"STOP: c0000218 UNKNOWN HARD ERROR
UNKNOWN HARD ERROR"
It does it every time I restart the computer. I can't get past it. Anyone have an idea?