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Tom's Hardware > Forum > CPU & Components > Power Supplies, Cases & Mods > [Solved] Computer starts then shuts down right after

[Solved] Computer starts then shuts down right after

Forum CPU & Components : Power Supplies, Cases & Mods [Solved] Computer starts then shuts down right after

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Best answer from acer0169.

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umrjake57   08-18-2010 at 04:29:57 AM

I went to turn my computer on this morning and shortly after posting, everything turned off. I went to turn it back on and the computer lost power 1-2 seconds later. If I leave the computer turned off for a while but still plugged in, it will stay on long enough to post, but if I try to turn it on right after it shuts off, it powers off right away. I pulled the PSU out and tested it with a multimeter, and all of the voltages were where they should be. Is this a motherboard problem?

I have the following setup:

Antec TP 550W PSU
Tyan Tiger K8W Dual Socket 940
Dual AMD Opteron 252's
4GB ECC Registerred DDR
XFX HD4650 1GB
2 x 160GB SATA HD's in RAID 0
Windows XP Pro

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shovenose   08-18-2010 at 04:45:40 AM

hmm...check for any bulging or leaking capacitors...thats my only idea.
oh and what exact psu?

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acer0169   08-18-2010 at 10:34:33 AM
Best answer

Could be a motherboard issue, but I've got a computer in for repair right behind me and that was doing the same thing. Turned out to be a faulty RAM stick. Try all RAM out, then one at a time (if there's more than one) testing them in the first DIMM slot and see if you can boot up.

------------------------------ ASUS M4N82 Deluxe • Phenom II X6 1090T (4.0GHz)
2x GTX 260 (216) 896MB (718/1485/1100) SLI x16x16
8GB Corsair XMS2 • SB Audigy SE • 640GB Boot, 3TB Storage
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umrjake57   08-18-2010 at 02:46:56 PM

I will have to check the RAM when I get off work, I definitely like that idea better than having to replace the motherboard.

The PSU is an Antec True Power 2.0 550W circa 2004

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hell_storm2004   08-18-2010 at 03:45:31 PM

It could be the RAM's. If you have two sticks. Try to boot individually first then see if anything works.

Reply to hell_storm2004
umrjake57   08-19-2010 at 06:10:37 AM

It turned out to be a RAM problem, just not bad RAM. Either my RAM sticks are too thin, or the slots on my motherboard are too wide, because the sticks are easily moved while locked in place. I wiggled them back in place as best I could, and the computer finds all 4 sticks and stays powered on just fine.

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jsc   08-19-2010 at 07:33:14 AM

Unusual problem. Nice work.

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Mousemonkey   08-26-2010 at 02:59:14 PM

This topic has been closed by Mousemonkey

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