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Computer turns on then off

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RasmusL   02-04-2009 at 04:19:08 PM

When I press the power button, my LEDs turn on for about ½ a second, then it turns back off. After that the power button doesn't work before removing power.
If I take out my graphics card, it stays turned on, and gives me 1 long beep and 3 short - which means that there's just no graphics card? Does this mean my graphics card is defective, since it just turns off if it's plugged in?

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Regent   02-04-2009 at 04:50:07 PM
- 0 +

Hello
What graphics card do you have?

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RasmusL   02-04-2009 at 04:56:40 PM
- 0 +

It is a Winfast 7900GS.

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Regent   02-04-2009 at 05:02:10 PM
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if there are additional power connectors on card (pci power) - you need to connect them
maybe your PSU has not enough power for this card
i had the same troubles with GTX260 - it has 2 additional pci power connectors
without them (or with weak PSU) it doesn't work

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RasmusL   02-04-2009 at 05:29:10 PM
- 0 +

There is an extra 6-pin connector on the card, and it has always been connected. The computer is 2 years old I think, and the PSU is only about 5 months.. I haven't had any problems before :)

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pr2thej   02-04-2009 at 06:09:20 PM
- 0 +

So you can boot into windows using your motherboards onboard graphics?

If thats the case then either your PSU has degraded, or your card has took a power surge or overheated or took some ESD or similar nasty event. Try testing the GPU in a friends machine, making sure they can power it, and have the correct mobo slot.

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RasmusL   02-04-2009 at 06:16:40 PM
- 0 +

There is no onboard graphics, so no, I never get further than a beep from the MB :(

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amdfangirl   02-05-2009 at 06:41:10 AM
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What PSU do you have? Try the computer with one stick of RAM at a time! Make sure everything is plugged in. Good luck!

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abcd1234   02-05-2009 at 07:15:52 AM
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i have the exact problem. been having it for almost a year already. all i do is keep trying to turn it on by closing it from the back and then turning it on again.

Reply to abcd1234
amdfangirl   02-05-2009 at 07:23:54 AM
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Weird I think had a PSU that did that...

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Bronze CPUs badge jsc   02-05-2009 at 04:08:42 PM
- 0 +

Either your graphics card is defective or your PSU is.

The one long and three short beeps means the BIOS got past the memory tests.

Try unplugging all your drives - drops the load on the PSU a little. Will it boot with the graphics card? If so, your PSU is bad.

The next step is to test the graphics card in another system. If it works, the PSU is bad.

abcd, why not simply fix the problem.

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abcd1234   02-06-2009 at 12:43:07 AM
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cuz it isnt a psu problem. already tried a new psu

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mentormatt8   10-30-2009 at 01:05:11 AM
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I'm not sure that it is a Graphics Card. It might have something to do with the temperature though. I had the same problem yesterday and I resolved it following these directions:
http://annoyances-resolved.blogspo [...] oting.html

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