Hi guys, Can anyone confirm my thoughts on a problem that accured on my pc..? My PC died last night ... just went dead .? I tried to turn it back on but the power switch was not working...? Now... i have an antec true 550w PSU and my first thought was the PSU has blown but when a PSU blows you get a burning smell and also the lights are still on, on the mobo and to test the PSU you can connect 2 of the pins with a wire on the main connector .. now when i did this and turned the PSU on all of the 7 case fans and HDDs powered up and the lights was flashing on the front of my DVDrom and my DVD-RW .... Maybe this says to me that the PSU is ok...? Anyone confirm this..? After doing the above i've now come to the conclusion that the problem is down to my mobo...?. hence "Lights are on, but nobody home" My pc runs daily at 208X12.5 @2.0v =2610mhz and my spec is in my sig... Many thanks for reading my post Abit NF7s V2.0 Mobo Radeon 9800xt 256mb, xp2500 mobile @208x12.5, Antec true 550w psu, 2X512 xms corsair Pc3500 in dual channel, Twin 10k Raptors (raided) waterchill cooled..

If your PSU is powering the fans etc. then it's almost certainly ok - especially as it'a a decent make. Chances are it is a CPU or MOBO problem - if you have a PCI modem you can try removing that - you may have had a spike without realising it. "I know that I'm mad - I've always been mad..."

Hi, Thanks for the fast responce.. I do not have a PCI Modem so i dont think that would be the cause and also if the CPU had blown i think the power switch would still work but no post.. ........... Abit NF7s V2.0 Mobo Radeon 9800xt 256mb, xp2500 mobile @208x12.5, Antec true 550w psu, 2X512 xms corsair Pc3500 in dual channel, Twin 10k Raptors (raided) waterchill cooled..

is there a nasty smell coming from the power supply?

There are no burning smells coming from the power supply .... ............. Abit NF7s V2.0 Mobo Radeon 9800xt 256mb, xp2500 mobile @208x12.5, Antec true psu, 2X512 xms corsair Pc3500 in dual channel, Twin 10k Raptors (raided) waterchill cooled..

Your PS can definitely have a problem but no hot insulation smell, and all lights are on. There are several rails coming out of it, and it takes only one go bad to create problems. Go to Newegg or CompUSA and get a power supply tester-that's the only way to test for sure. Newegg has a Powmax for $16 incl. shipping, CompUSA is around $20. I just replaced a friend's bad PS that was causing random reboots because the 12V rail contact in the plug was burned PARTIALLY in a voltage spike. Never would have found it without a tester. Give a man a fish and you feed him for a day; Teach a man to fish and you feed him for a lifetime; Then industry pollutes the water and kills all the fish.

FYI the motherboard has circuits on it to check the inputs from the power supply. If the motherboard thinks that it's not getting all the right voltages it does not send a `power good' signal to the power supply. This prevents the power supply from staying up. This could be caused by either a bad power supply or a motherboard problem.