A friend said his computer (Compaq Presario SR2000) turned off while he was using it and was unable to turn it back on. I opened it up and found the power button clip laying inside the case. I reattached it and ensured everything was properly seated. When I plugged in the power cord the green light on the back of the PSU stayed constant. However, when I try to start it, the green light on the PSU blinks and a very faint chirp sound is heard from somewhere in the case, I just can't pin point it. If I hold the power button in it will chirp and blink about every 3 seconds. I tried using a different power cord and a working PSU but neither helped. With the other PSU the chirp noise sounded different. It doesn't seem to be a BIOS code and there is not an LED on the motherboard. I'm thinking the clip fell on the motherboard and shorted it out. Any thoughts? Windows XP Pro SP2 AMD Athlon 64 3200+ 2.0GHZ Venice Core Gigabyte GA-K8N-SLI Motherboard 1GB Geil DDR400 Dual Channel ATI Radeon X800 GTO Fireblade Edition 256MB DDR PCIE

First of all, disconnect all optical drives, hard drives, and floppy drive if there is one. It might be a good idea to remove all PCI cards as well. Start up with the basics: keyboard and monitor, no mouse. Leave the graphics card installed if there is one. Plug in, turn on, and see what happens. WinSimple Software

Did you need to remove the leads when repairing the switch? Be sure they are connected correctly.

I tried removing and disconnecting all components (has onboard video) and still nothing. I did not have to remove the leads on the assembly and I made sure they are fully seated. I tried starting the computer w/o anything (monitor, keyboard, etc..) and still no power. I don't know what else to try. Windows XP Pro SP2 AMD Athlon 64 3200+ 2.0GHZ Venice Core Gigabyte GA-K8N-SLI Motherboard 1GB Geil DDR400 Dual Channel ATI Radeon X800 GTO Fireblade Edition 256MB DDR PCIE

Did you try both said power supplies after connecting only the basics? How do the capacitors on the motherboard look? Take a look at this to see what bad caps look like if you don't know for sure what to look for: http://en.wikipedia.org/wiki/Capaci... Did you try turning on without the RAM installed? Try that and see if you get a beep code. If all you have is the motherboard, power supply, and processor hooked up and you still get nothing when turning on, the motherboard and/or processor is probably bad. The old power supply may also be bad, and took the motherboard/CPU out with it. WinSimple Software