No booting/POST

[luisnadal]

I was using my computer just fine and I plugged in a USB key and suddenly my computer just froze. The screen went black, the HDD activity light stayed red. I hit the reboot button but nothing would happen, so I turned it off trough the power button. What happens now is that I don't get anything in my screen after I turn the computer on, and the HDD activity light will just stay on during booting. I tried leaving only the CPU, 1 RAM stick on all 4 dimm's and video plugged in and nothing. I tried clearing the CMOS and nothing.

My PSU is only like 3 months old and it's an ENERMAX 450w 20pin, atx12v. My computer specs are below. Thanks for any help. Video card is ATI radeon 9600 256mg.

 

[deathwalker]

Have you tried switching back to a PS2 keyboard to see if the problem goes away? If you switch back to a ps2 keyboard and the problem goes away...try this...while ps2 keyboard is connected go into the bios and make sure that your usb support features are turned on. are u using the rear usb connectors or are you possibley using a front of the case usb port..front usb ports are usually connected via cables to a mobo header...could they possibley be connected wrong?