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				My verdict= bad mobo.  Yours?
			 
 I bought and assembled a system about a month ago.
 Athlon 3500+ (x64) on a MSI nForce4 Ultra board.  4x512 of kingston ram.  MSI 6600GT.  2x Maxtor SATA 200GB.  Some generic card reader and dvd burner.  Running Windows Media Center.
 
 I played a monster session of games last night.  A couple hours of AOE3, followed by about an hour of HL2.  I wasn't overclocking, but the system got a little hot, speedfan gave me a warning when I hit 50*C.  I didn't think it was a big deal.  It shut down without any problems last night.
 
 This morning, it hangs on the inital post.  On initial powerup, I get the 'ok beep'.  A bit of a header, then a line that reports that my processor is what it is, but doesn't proceed to perform any other checks.  I can't hit F2 or F8 to enter boot menu or bios.  Nothing happens.
 
 Unseating everything and reseating does nothing.  No ram gives me the expected beep error.  Minimal system; processor, one stick of ram (checked all 4 individually) with only my master hdd (non-raided) and video card doesn't seem to change anything.  Plugging in an old working ide drive.  Nothing.  Same when trying to boot to a usb jump drive (once I reconnected the front usb port).  I don't have another pci-e video card to check, but I am getting a picture on the screen, so I suspect it isn't the problem.
 
 So I think it is something on the motherboard, not entierly dead, but something problematic.  I believe that my northbridge was the sensor that was reading hottest.
 
 What else should I think?  I want to be pretty sure of myself when I go to exchange the board.
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