I put in a replacement power supply, which was 520 watts. Upon firing up the system everything seemed fine--but whenever I would try to start a game it would give me a 'blue screen of death' and restart. I downloaded CPUID HWMonitor to check the voltages to the components, and I noticed that the 12v rail was running at only 4v (or so it said) and the 5v rail was showing about 3v. The graphics card was not getting hardly any power as well. With the help of a buddy, I discovered that my "cheapo" power supply from Best Buy did not have sufficient amperage on the rails to run the Nvidia GTX 460 that I have, so I assumed this was causing the crashes upon starting games. It also went 'blue screen' afer just leaving the PC idle for about 45 minutes.
So I decided to bring in the big guns and ordered a 750 watts PSU, with lots of amps on the rails--I wanted to be sure my components were getting enough amperage. My video card now shows plenty of power supplied to it , which is good news. However, the 12v rail is still showing only 4v and the 5v rail is still only showing 3v. I did still get a 'blue screen' from idling the computer despite the fact that the video card is well-powered. Did I fry my motherboard? Does anyone have any suggestions or other tests I can run? Thanks in advance!
EDIT: I didn't think of checking the voltages in the BIOS until now...I did and the voltage for the 12v rail is reading 11.8 and the 5v rail is spot on. The monitoring software must be faulty. But now the question is, why do I get blue screens if the voltages are good after swapping out the power supply?
This post has been edited by tclifford7997: 16 January 2013 - 03:45 PM