"Jack Bruss" wrote in message
...
I just built a new computer, and when I turn it on, it turns off in about 4
seconds. I hear a longish beep, and all 4 fans in the system are turning
before the whole thing shuts down. There is no time for anything to show
up on the monitor. The system is as follows:

CASE - COOMAS|CAC-T05-UB BLK/BL RT
PSU - SUNBEAM|SUNNU450-US-BK 450W RT
MB - ASUS M2N-MX GF6100 AM2
CPU - AMD|A64 X2 3800+ AM2 2x512K R
MEM - 1G|OCZ DII800 OCZ2P800LP1G R
HD - 120G|WD 7K 8M SATA2 WD1200JS

The Power supply has this temp monitor fan controller thing, and it shows
a temp of about 25 C, before the computer shuts down. I've tried starting
with the knob at high, low, and auto, with the same results, that is shut
down in about 4 seconds.

I tried to boot before I installed the drives, and got the same results.

Any help will be greatly appreciated.

Thanks,

Jack

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That particular DDR2-800 memory needs 2.2V and is geared more towards
overclockers, but I believe that motherboard supplies a maximum of 2.0V to
the memory and is not the best board choice for high voltage memory. Your
memory is probably not supported, so I'd go to the Asus site to get a list
of QVL memory for that motherboard, then do a memory exchange. if you can
get your hands on some DDR2-533 1.8V memory just to see if it'll boot up,
that could rule out other possibilities.

Also, double-check that both 12V power cords are plugged into the
motherboard.

-Russell
http://tastycomputers.com