Ok, to start I've google searched and searched the forums till my fingers are bleeding. I've tried every solution that I've read about and I'm still not getting anywhere which is why I need to see if any of you PC Gods have an idea of what to try next. I've read the NO POST guide and that didn't get me anywhere either. Here is what's going on. I have a HP Pavilion a350e with a A7N8X-LA mother board that was running fine one minute but then I turned off the power and it's only turned on once since then but only for a couple minutes before freezing up and never turning on again. 1st symptom: Light on power supply blinks non-stop when I plug the power supply into the motherboard. If I unplug the power supply from the mother board the light stops blinking and stays on like it should. The minute I plug it back into the mother board it starts blinking again. My first thought is that I blew the power supply. I ordered a new one on ebay and tried it and that one gets the fans and hard drives to spin but then turns off. I then went to Best Buy and bought another power supply and that one has the same problem so I can pretty much say that between the 3 power supplies at least one or two are good. 2nd symptom: I ordered a new mother board and cpu chip off of ebay and connected that to one of the new power supplies. The PC actually booted up for less than 5 minutes before freezing and then started acting the same as when the old mother board was in. The really odd part is that when it did boot up, all of my graphic settings were off and had to be reset. What's the chance that I somehow fried the 2nd mother board? It was a new power supply. Current situation: I've disconnected everything from the mother board with the exception of the cpu. When I connect the power supply and turn it on I do get one long beep which should mean there is a memory failure. I have two different memory sticks so I try putting one at a time into memory slot one and turning on the pc. There is no beep when I turn on the power now, but within seconds the power supply turns off. No beeps, nothing ever shows up on the monitor. I've tried resetting the bios using the jumper. I have two cpu chips. One cpu chips gives me the one long beep when I don't have a memory stick installed and one cpu doesn't give me the one long beep but instead just turns off in seconds. What's the chance of both memory sticks going bad at the exact same time? I'm going to bring the power supply back to Best Buy but I don't want to spend too much money on a 4 year old PC. If it wasn't so soon after Christmas I'd just buy a new desktop but right now that's not an option. Any ideas on what to try next?