My new 750W PSU arrived today, and the computer started working immediately after installation.
However now I have run into an additional problem. After about 15 minutes of being on, everything locks up. It seemed like a RAM issue, so I pulled out all but 1 stick and tested each stick individually, yet the problem still exists.
I also get a beep error upon startup. Three or four seconds after the intial post beep, I get 4 beeps separated by pauses: 1-1-2
I'm a little unsure how to interpret the beeps though, even after looking at the charts here:
PC Hell: BIOS Error Beep Codes
I have AMI BIOS, but my beeps sound more like ones they have listed for the Phoenix BIOS. Unfortunately, they say the 1-1-2 code means the motherboard is having problems.
One time when it locked up, the LCD screen began to flicker pretty wildly - so fast that it hurt to look at it!
I'll try it with a new GPU and a few other sticks of memory, but otherwise I guess i'll look into exchanging the motherboard at Newegg
