Is it the motherboard or power supply?

I built my computer about 3 months ago, it has an ECS motherboard, running XP. Last week I set up my PC for standby and hibernation and walked away. The next day I could not get anything to work. The drives, keyboard, mouse, graphics card do not work. Bios will not load even after clearing CMOS. I tried switching the motherboards for a QDI I had and there was no change at all. What is working is the fan on the power supply, the fan on the CPU and graphics card, and the light turns on for the Zip drive. Could the power supply be at fault even though some things are working?

 

Ok, I found some helpful information on another members problem, I disconnected the IDE cables from the mother board and the power went on to the drives. I could even play a CD on the headphones. So I guess it is not the power supply. I still cannot get the video signal to the monitor or any power to the keyboard or mouse, even when running the basic setup with just the motherboard, ram, CPU, and graphics card. Also the power light is not lit on the front of the computer even though the light is working on the motherboard. Any suggestions? Thanks so far.

 

Sounds like the motherboard, but the only way to be sure is to swap out the components with another system. Try the motherboard, power supply, RAM and CPU in a different comp to eliminate all possibilities.

On second thought, do you get any beeps while booting up? It could also be that your video card is bad, so try that too.

 

I agree, try another PS first, then the video card (seen that too many times)(if you have both onboard video and an AGP card, pull the AGP card and try the onboard video), then the memory, and then the Motherboard. Although recently, I have also seen HDD's cause this issue to, so try a different HDD or just disconnect the drive/drives on at a time too, before trying the motherboard.

At one time or another, I've seen most of all of these components cause a similar problem. Good luck on the issue, let us know what the problem is, I'm guessing the motherboard, I'm not a big ECS fan.

wuf@bark.arf