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Computer hangs during POST bootup, in between dual core check

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Hi, I recently moved 1600 miles and after setting up my desktop, I was happy to see that my computer would run fine. However, starting last night (a couple days in from the move), my computer starting hanging during the POST test after a necessary software reboot.

I have a dual-core processor, and it detects the first core, then the computer locks up, and I have to unplug the power cord to turn it off. I hear an odd sound, but I do not know what the sound is coming from, nor what would cause the computer to hang during the boot up.

My specs are:
Motherboard: Biostar TForce4U-775
Processor: Intel Pentium D 940 800MHz FSB LGA 775 Dual Core, EM64T
Memory: CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM
Hard Drive: 3 x 200 gb 7200rpm (C:\ SATA, D:\; E:\ IDE)
Video Card: SAPPHIRE 100134L Radeon X1800XT 512MB GDDR3 PCI Express x16
Sound Card: SB Audigy 2 ZS Audio [C000]
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp.051019-1519)

My main questions are:
What could possible cause my computer to hang in between checking the two processor cores? As I said, one shows, but the computer locks up before showing the other.
What is the best way to isolate the problem? I suppose unhooking everything that isn't necessary and going from there.
Is it possible for one of the cores to die while the other is intact?

Just some other notes:
I can not get into BIOS, can not get to the safe mode dialog, etc etc.
Nothing strange happened before this all happened. I was in the middle of reinstalling a new set of video drivers and had rebooted a couple times. The power was cut off once by accidently hitting a switch on the wall I didn't know connected the computer.
I had recently plugged in a DVI cable from my pc ot my new LCD screen, but I dont see how that'd be an issue.

Any and all help is appreciated;)

Edited by mith36, 27 July 2006 - 06:42 AM.

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As weird as this is, it seems that one of my USB ports was causing the hang. I recently moved my usb cords around and realized that one of them was causing the hanging. I have plenty of other ports so I'm fine, but why would this cause a problem?
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