Okay, recently I was getting blue screens everywhere when I ran everything, couldn't figure out why, so I took it to PC shop. Turns out there was something wrong with the DX file on it, so they installed a new one and gave me it back. Problem sorted. They said it was stable and fine.

I get it home. It's a new hard drive so I install Mozilla and an anti-spyware program. Leave it on while I go out because I'm downloading Live for Speed.

I come back in, around.... 3 to 4 hours later, and the screen is black, wont start up again or respond to pressing any keys. So it's crashed. Great. So I press restart.

And now every time I start it up I get one continuous beep, or sometimes it loads the system info up (about 5 lines) then it won't go any further and I get no beeps, and sometimes it displays the BIOS graphic advert thing and hangs on that.

I've had it to bits and everything is connected properly, I even tried a different power cable incase mine was dead.

What now? I don't understand.. if it was working perfectly yesterday...