I've only had the blue screen once. The first time I ran chkdsk/f in command prompt it asked if I would like it to start when re-booted, i said yes. So I rebooted and nothing has happened. So I went back and typed it again and now it is saying: CHKDSK is not recognised as in internal or external command, operable programme or batch file!!
AAAAGGGHHHH!!!
I'm starting to tear my hair out now. It seems to be running not to bad at the moment, but it does this when re-booted then slows down after a bit.