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  Craigy 12:55 26 Apr 07
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I have a AMD 4600, Asus m2n sli Deluxe, 2x512 Corsair ddr2 800. When i turn the power on the green light on mobo comes on, when i turn the power on the tower the power supply kicks in and just before it gets to post it shuts down everything. Does anyone have any ideas?

Cheers

  alan2273 13:06 26 Apr 07

Have you checked to see if the CPU fan is working?.

  Craigy 13:08 26 Apr 07

Yeah fan works.

  alan2273 13:11 26 Apr 07

Can you disconnect the hard drives and CD/DVD drives and see if it reaches post.

  Craigy 13:20 26 Apr 07

Just tried disconnecting the Drives and the samething happens.

Cheers for reply

  alan2273 13:24 26 Apr 07

It sounds like the PSU is the problem.

  Craigy 13:33 26 Apr 07

The PSU does come on, if it was the PSU wouldn't it just not come on at all? I've neva had a prob with psu's before so not really clued up on em.

Cheers for quick reply

  alan2273 14:51 26 Apr 07

PSU's have all sorts of fail safe devices built in to them, so any one of these could cause your problem.
My first thought was the CPU fan wqas not working and it was shutting down to stop the processor burning up, then when I asked you to diconnect certain drives this would reduce the load on the PSU and as that has not worked the only compononents left are the motherboard or the PSU.
PSU's will come on even with a fault, is yours a generic or brand name PSU, and what wattage rating also how many rails does it have?.

  Craigy 16:40 26 Apr 07

The PSU is a 580W HiperPower, not had it long only since Feb.

  Fruit Bat /\0/\ 16:46 26 Apr 07

Either CPU overheat, psu failed, or motherboard short to case. Could be faulty RAM try running with just one stick at a time.

  Fruit Bat /\0/\ 17:07 26 Apr 07

Either CPU overheat, psu failed, or motherboard short to case. Could be faulty RAM try running with just one stick at a time.

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