I have a Dell XPS410 desktop PC. It’s about 5 years old, I’d guess, and FWIW, runs Win 7 only - no dual boots or anything.
I don’t think that’s relevant, though, because the machine will not even come close to booting. It conked out while I was using it about 8 hours ago, and when powered on all I get is an amber power light (it’s usually green) for a few seconds. I hear the PSU fan spin up for maybe two seconds, then it all powers down. If I leave it connected to mains power, this simply repeats ad infinitum. Nothing on the screen, no Dell diagnostic lights.
I have tried disconnecting the 24 pin motherboard connector and jumping the green and black leads - PSU fan spins up like it was going out of fashion, so PSU probably OK? I have removed all PCI cards (graphics and a sound card), disconnected all drives (2 HD and 2 DVD, all SATA), and removed the 4 1Gb memory modules. I have also disconnected the internally connected USB multi card reader.
All to no avail. Is there anything else I could try? Or should I treat this as a dead motherboard? If anyone has any thoughts, I’d be very grateful.