Computer Crash?

My home PC just crashed yesterday. About 2-3 months ago it started acting funny and narrowed the problem down to the #2 RAM slot. I went out and purchased a new memory stick but it did not fix it so I figured that it was the mother board. I removed the stick, rebooted and all was fine. A couple of days ago the computer just started closing with "Windows experienced an unexpected problem and had to shut down" message and so I rebooted and that seemed to work. Well it happened again and so I rebooted then ran AVG and S&D to check for problems. I ran them at the same time (probably not a good idea) but everything was going good until I back from a restroom break and the monitor was off and he computer was beeping! Wiggled the mouse and no response, tried to reboot and no display. My question is does anyone think that this is virus related or just hardware failure? By the way it is a HP desktop with dual core AMD processors I believe.:confused

 

You said the machine was beeping, what were the beeps like and did you check with HP to see what those beeps mean? Ya know, one short one long, continuous etc. You get the idea? It'll narrow the problem down for ya.

 

Thanks, I have not checked with HP but the beeps where short and it beeped about 5-6 times in a row then pause for about 10 seconds then started again.