My computer as started to stay on grey screen and when i shut it down and start again it goes into repair mode then tells me it cant repair and is shutting down after shutdown i start again and it slowly comes back to life,i have also noticed no beep at start up,ive tried f8 but cant find safe mode,also on xp i could restore back weeks on this ive no idea how to do this, yep computer illiterate silver surfer

My Computer
At a glance
windows 7 home premium 64 bit
- OS
- windows 7 home premium 64 bit