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Computer turning on and off.

Last response: in Windows 7
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July 13, 2011 4:10:21 AM

Hello, When I press the power button on my computer, everything lights up briefly, then turns and then continuously trys to start about every five seconds. Any Suggestions?

More about : computer turning

a c 229 $ Windows 7
July 13, 2011 12:05:03 PM

It could be misconfigured ram, CPU not seated properly or bent pins, the PSU isn't powerful enough to power your system. You need to see if you can get your board to boot with just the CPU, ram, & GPU and go from there.
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July 13, 2011 2:54:10 PM

The computer has been running fine for a little over a year. Unhooked all drives, tested each stick of ram individually, removed gpu. Same result.
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a c 229 $ Windows 7
July 13, 2011 4:05:09 PM

Perhaps a power surge messed things up. Have you tried clearing the CMOS/bios? After that, you can go into the bios and load optimized defaults and tweak whatever setting you previously had in there.
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July 13, 2011 4:33:09 PM

Removed the battery and reinserted. Nothing. I don't know why, but I removed the power connectors to that said EATX 12v. When I did that, the system powered up, but nothing happened as far as boot sequence. What does this mean?
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a c 229 $ Windows 7
July 13, 2011 4:58:00 PM

That's for the CPU. I don't think you can boot without that connected.
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July 13, 2011 7:51:56 PM

That's what I thought, but the computer is not shutting off when I do that. So, do you think it's the ps, mb, or cpu???
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July 13, 2011 7:59:20 PM

Check the CPU Power Connector(8/4 Pins power)... Also, Pull those power connector and push back in until you hear a click... Also, check and see if your Power Button doesn't have anything inside of it my taking the front of the case off...
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Best solution

July 13, 2011 8:23:10 PM

If you can get your hands on another PSU, you should throw that it and see if it still occurs. I fixed many computers with this issue and 90% of the time it was the PSU. Other times it was mis-seated ram, case leads messed up, or a bad CPU fan.
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July 13, 2011 9:37:23 PM

I bought another power supply to try, I was just hoping to have a more definitive answer before I open it and not be able to return it.
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a b $ Windows 7
July 14, 2011 12:07:32 AM

Good luck
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July 14, 2011 1:29:10 AM

styxbb said:
I bought another power supply to try, I was just hoping to have a more definitive answer before I open it and not be able to return it.

You shoulda bought a $40 PSU for a test...
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July 14, 2011 1:41:57 AM

styxbb said:
I bought another power supply to try, I was just hoping to have a more definitive answer before I open it and not be able to return it.


Are you referring to returning the PSU? Where did you buy it? Most stores (Best Buy, Fry's, etc...) allow you to return computer components even if opened.

Edit: Also, wouldn't be a bad idea to either keep it for future testing or return it and pick up cheap one (i.e dynex 400w 39.99) for future testing.
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July 21, 2011 6:34:09 AM

Just got back from vacation, stuck the new power supply in and all is well....for now. Thanks for the responses.
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July 21, 2011 6:34:41 AM

Best answer selected by styxbb.
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