Custom-built PC Power Supply Question

July 7, 2010 at 10:22:42
Specs: Windows 7
Hi. Thanks in advance to anyone who can help me with this issue. Also, sorry for the length, I thought it necessary to explain my problem.

I recently built my first system six months ago. I purchased my components from newegg and assembled the system without difficulty. My BFG Tech power supply was making a chirping noise so I RMAd it and got a new one. The one I got in return initially made a chirping sound when I connected it, but the sound disappeared shortly after connection so I proceeded without much incident.

My question is that when I try to boot the system, the BIOS flashes and windows starts to load, but right before it seems like the system should boot into windows, a BSOD flashes quickly and then the screen goes black and the system reboots.

This happens frequently, almost every time I have to reboot the system. I started to troubleshoot it and removed one of my two video cards because I thought it could be a video card issue. I have tested the system with just one of the video cards installed, and I had no issues (I tested each one individually).

As soon as I put both video cards into the system together, my problem resumed. I am wondering if this could be a video card issue still? Maybe I am overlooking something? I don't think it is because each one seemed to work fine on its own, but I am new to building my own systems.

I am thinking that it is more likely a power supply issue. Maybe my power supply is going bad like the other one? Any help would be much appreciated. I am really stuck.

My system specs:

ASUS P6T Deluxe V2 Motherboard
2 - EVGA NVIDIA GeForce GTX 275
LG Blu Ray optical drive
2 - WD 1TB 7200RPM HD
BFG Tech 1200 Watt Modular Power supply
6GB of Corsair DDR3 RAM

I think that's all the relevant information. Thanks again to anyone that can help.

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July 7, 2010 at 12:52:31
You may have answered your own question. Power supplies don't chirp. According to what i read about that psu, it has 4 12volt rails. You should look for a psu that only has one 12 volt rail with enough amps on it to run your 2 cards. Sounds like when you hook up the second card, it kills the amps to the system. Try a new psu. I like Corsair single 12 volt rails. Check it out.

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July 7, 2010 at 23:51:53
Thanks for your help. I thought that might be the case. Wanted to seek some help before I dropped the money on a new PSU. I'll take a look at the Corsairs. Should have bought one in the first place...

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