I have a desktop that I built four years ago. I used it on a monday afternoon, on tuesday noon the fans came on by themself. Now everytime I plug in the power cord all the fans come on. No boot, no bios access. I tried another motherboard, no help. I tried another power supply, no help. I tried another proessor, no help. It has a Intel D865GLC board, a Intel P4 2.6 GHZ S478, 512KB,800FSB proessor, an ATX 480W power supply, 184-pin SDRAM DDR400 RAM, Intel AMI BIOS, Intel 865 chipset, An Radeon 8500 Video Card, Sound Blaster Audio Card. I removed the video card, no help, I have ordered new ram. Hope someone can help.