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AC Power loss > Power On not working???


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I just built a new rig with the following specs. Been tested, driven into the ground with OCs to ensure that it has been stable, but it has one annoying quirk.


Asus P5W DH Deluxe Wifi-AP 975X

Corsair HX Series CMPSU-620HX 620W

Intel CPU Core 2 Duo E6420

Corsair TWIN2X2048-6400 2GB Kit DDR2-800 XMS2-6400

EVGA 8800GTS 320MB

Thermalright Ultra Xtreme 120

CM Stacker 830 Black

(2) Sony Scythe S-Flex SFF21F 120mm fans

Highpoint RocketRaid 2300


Inside the BIOS, the option to Power On after an AC Power loss is set to enable, as I have always had it. This normally gives me the ability to turn on my surge protector and have my computer start up by itself. But not with this rig. Even though the option is set properly in BIOS, it's very intermittent. Most times, when I cut power to the computer (switch at back of power supply), and cut it back on, the computer will not turn on by itself.


Am I doing something wrong here, or is it the PSU/motherboard causing this issue?


Thanks for all your help and suggestions.

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