I have a computer that a customer gave me. The problem is that the\nfans/power on the computer will not shut off. Windows XP shuts down\nand the computer gets to the point where the monitor shuts off, but\nthe HDD, CPU Fan, PSU Fan, and Power On LED all continue to run. I\nhave tried a different PSU and that did not fix the problem. I have\nlooked for BIOS settings, but didn't find anything pertinent. I\nreconnected the power case cords to the MB to make sure they weren't\nmixed up. The only way to get the fans to shut off is to turn the\nblack rocker switch off or unplug the cord. However, as soon as you\nturn it back on or plug the cord in the fans start right back up.\n\nI even cleared the CMOS so that it would return to factory defaults\nand flashed to the latest BIOS. The fans still run and the green LED\nis still on when the computer is off.