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Computer starts by flipping powersupply switch

by BCarne / February 26, 2008 5:11 PM PST

I recently built a new system. I left for work the other day and shut it down before I left. When I got home that night I turned on the system. The fans came on, the dvd drives blinked, but nothing else happened. No beeping noises from the motherboard. It worked fine when I shut it down. I noticed that the computer started as soon as I switched the power supply switch to on, not when I pushed the power button on the front of the case, also computer would not shut down by the button on the front of the case, had to switch power supply button to off. Ant suggestions would be greatly appreciated. Can give a detailed list of installed components if needed as I built this computer myself.

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This suggests issues with
by R. Proffitt Forum moderator / February 26, 2008 7:56 PM PST

Either the power supply or the motherboard. The PSU could have trouble starting if you fitted something just big enough. That is some 400 Watt but installed dual video cards...

Bob

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This one comment is telling ...
by Edward ODaniel / February 27, 2008 2:37 AM PST
"I noticed that the computer started as soon as I switched the power supply switch to on, not when I pushed the power button on the front of the case, also computer would not shut down by the button on the front of the case, had to switch power supply button to off. Ant suggestions would be greatly appreciated."

If you turned off the power supply you shut off all power to the motherboard. Pressing the on/off switch does not do that.

Try turning the Power Supply switch back on - that will re-energize the motherboard. After doing this try pressing the on/off switch to get the computer to boot.

I have seen this on three different computers (fans coming on and drives lights blinking and on them the NIC lights also blinked briefly) and never worried about it as it appears to likely be an ATAPI issue.
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Re: This One Comment Is Telling ...
by BCarne / February 27, 2008 1:00 PM PST

I tried what you said. I turned on the powersupply, the fans and drives came on as usual, but the power button seems to do nothing. I tried just pressing, I tried holding it in for 10 seconds, I even tried the reset button. Nothing happens. I have a Coolmax GreenPower 1000 Watt powersupply and an MSI X38 Platinum motherboard. The board has led lights at each component that tells if the component is working. It even has a diplay that shows errors, but it shows no errors.

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Sounds new, warranty.
by R. Proffitt Forum moderator / February 27, 2008 8:51 PM PST

Given how new it is, I'd contact it's maker and ask for a fix.

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