Vista crashing

I bought a new computer about 2 weeks ago and it ran vista perfectly for the first week. I didnt experience any of the lagging that people complain about and I didnt even notice the slower performance in gaming like some report. I was in the middle of playing a game and it completly froze. I had to restart because CTRL ALT DEL wasnt working. When the computer restarted I got nothing except a black screen. I restarted again and it froze at the ASUS motherboard boot up screen. I restarted yet again and I got to the log in screen but it stayed there for about 3 minutes. I called the company that made the computer and they belive it was because of a powersurge. I have my PC on a surge protector so they decided that maybe I needed to reset my bios. My surge protector wasnt expensive but I still dont belive thats what is causing my problem. What do all of you think I should do? Would reseting the bios fix anything or did they just tell me to do that to shut me up. Im thinking about picking up a copy of XP and just switching to that instead of screwing with Vista. I will give vista another try in a year or two but I was wondering if XP supported the Duo core processors and if it does would I take a performance hit on my processors speed.

nope I dont know how to overclock so I dont attempt things like that. I have never touched the bios because there was never a reason for it. I did put new RAM in but it was running fine for the first week I had the computer. Would RAM just go bad for no reason? Thanks for the reply

Im not doubting you but if that was the problem wouldnt it of happened at the begining? I bought this computer from ABS computers through newegg and the ram that came with it is listed as running at 1.8 volts the ram I bought is listed to run at 1.85 volts. Im assuming that ABS set the volts right. I did forget to change it to 1.85 volts but would .05 of a volt do anything?

heres the ram I bought that is currently in my computer http://www.newegg.com/Product/Prod [...] 6820134041

Heres the ram that came with the computer http://www.newegg.com/Product/Prod [...] 6820145538 2 of them so its 1 gig total.