Abit kn9 sli, my problem is this, when i turn my pc on the fans spin for about one second then it all turns off. the power lights on the motherboard stay on but it wont power up at all. if i turn the power off and on again it does the same. if i just try turning it on again without swiching the power it does nothing. ive tried disconecting everything and narrowed it down to this. if i take out the 4 pin cpu (atx 12v1) power connector and turn the power on the fans spin and it powers up but nothing comes on screen. if i put the connector back in and power up it wont. help, im stuck

Check your codes here:
http://www.computerhope.com/beep.htm

So after 5 seconds it won't come on again at all, or it runs for 5 seconds each time? What else do you have running on this computer? I'd suggest disconnecting all non-essential devices (hard drives, all but one memory chip, any expansion cards other than video) - if one of them has a short, they can pull down the power supply (regardless of the condition) and cause it to shut off exactly as you've explained. Let me know if that makes a difference (it obviously won't boot without a hard drive, but it will get far enough to see if that's the problem). If that doesn't make a difference, let me know and we'll try something else.

Try checking the jumpers on the motherboard. A lot of the SLI compatible boards have jumpers that need to be configured properly. You can find out the positions by checking the motherboard manual. Are you using an SLI capable video card or is the video onboard? I just ask because I had the same problem once while trying to install an SLI video card. I had no picture on the monitor and I couldn't figure it out for the longest. Finally I found the answer in the motherboard manual and it turned out to be a jumper that was set wrong. Hope this helps.

A long beep signals that no memory is detected ; test the memory sticks and reseat them.

ur mobo bios must be corrupted update it, this will solve the problem

Try downloading drivers for your motherboard, there may be an audio patch or some other driver you are missing

The problem could be a failed electronic component, and no cooling remedy will solve the problem. When some components fail, they result in high heat conditions.

Hi,
Usually the sound is called bios beeps. They let you know in advance if there is a problem.

Usually a high low bios signal ( like an old german siren) means a cpu issue.

Check the processor and cooling fans, and check it's temp....take two aspirins and call me in the morning...LOL :)

Hank

I would not bother with the 9500 series they are just OC verisons of the previous ones, and everything above the 9500 (9600, 9700, 9800 et al) are too close in price to the latest generation, not cost effective. Take a look at this link, I believe it will satisfy your needs.

http://www.ewiz.com/detail.php?p=MSI-250_51&c=pw

The problem is ***********, there is electrolytic capacitor leaky sometimes color blue or green. Try to check if here is capacitor that on his upper top is slight blown or deform. f you can see you need to replace this if you know how to use he soldering iron or else you need to buy a new motherboard