Windows 7: Win 7 Crash on Startup

So heres the deal. I finished building this computer about a year ago and put a fresh copy of win 7 pro (64 bit) on it. I soon discovered that after starting up and displaying the windows logo I would get the blue screen of death and it would hence crash and restart. I first sent the motherboard back and had it replaced. Then the processor, hard drive. I also tested my RAM by swapping out the two sticks I had into different drives and then taking one out at a time. Still no good. Finally I replaced the video card with a new one and now instead of a blue screen after the windows 7 startup logo I get a mouse on a black screen before reboot. I am wondering if I should try the power supply next, as the video card tech support people said it might be since I was getting a power kernel error on startup, when my PC would crash, that registered itself under Event Viewer. However I am not sure if thats the case since I know longer get that power kernel error with the new video card. Its either that or the ram, which I already tested so I am pretty sure its good. If it isn't either of those then that rules out the possibility of a hardware issue, and I already did a reinstall with a different copy of Windows 7 as a test, which failed, so I am pretty sure the software is good. If you would like to see a list of my PC hardware + software specs check my profile.

NOTE: It only gives me the error off of a cold boot, usually longer than 12 hours.

But what do you think.... hardware, software, or does my computer just hate me?

Have you ever tried cold-booting in safemode? If you can cold-boot your system in safe mode with no errors, then that means one of your drivers is causing the problem.

I think it's either one of the drivers or your power supply.

If you can, try sticking a friend's power supply in your system.

Your PSU's specifications are enough (on paper) to run your system, but it may be of low quality and may be failing.

Welcome to SF.

Sorry you are having problems.

Please do the following:

BSOD Posting Instructions

http://www.sevenforums.com/crashes-debugging/96879-blue-screen-death-bsod-posting-instructions.html