I come to you with yet another problem.
My computer was running well. Two days ago, I turned off my computer. Several hours later I went to turn it back on. The fans revved, the lights turned on, the fans continued to rev, the BIOS never showed its face.
When I say rev I mean run at a higher speed than normal. Normally on start-up my computer would always run the fans at a higher speed for 3-4 seconds, then the motherboard would beep and the BIOS would appear onscreen. Not anymore.
This problem occurred once before, about three years ago. I solved it then by disassembling and reassembling the computer.
I've completely disassembled and reassembled the computer two times now. The first time I did this the computer started up normally, but the mouse and keyboard did not respond. When I restarted the computer it failed to boot the BIOS and I was back to square one. After the second disassembly and reassembly my computer continues to have this problem, only now it will turn on as soon as I turn the power supply on, not when I hit the power button the case.
What could be going wrong?
Like I mentioned before, the computer will turn on as soon as I turn on the power supply. Interestingly enough, the power switch will turn the computer off after a few second, however, the power switch will not turn the computer back on!
Carnarvon, you mentioned a short being a possibility. I have had the motherboard secured in the same fashion for the past 3.5 years. It is screwed into all the places it should be, according to the case manual. What would cause a short so spontaneously, and will this permanently damage the motherboard?
Anything fucked with the power switch can be the PSU, or a wall outlet problem. I had a computer case where if it was plugged into a socket with bad grounding, touching the case would shock you, and turn the computer on.
My motherboard doesn't use a PC speaker to communicate its thoughts. It uses an external USB bracket integrating four diagnostic LEDs. When I boot up the computer, the LEDs are all red. According to the motherboard's manual, "the D-LED will hang here if the processor is damaged or not installed properly."
I'm a bit boggled about this. I was under no impression that my CPU was failing. Do I take my motherboard's word for it?
EDIT: Some background information: I have never cleaned and changed the thermal paste between the CPU and heatsink, even when I removed the CPU and put it in a new motherboard. The CPU is four years old.
The motherboard I have is a socket 939. It's only two months old; I bought it from a company in China as a replacement when my last motherboard went south.
You must be missing a step since you fixed it earler by reassembling the components. Remove the heatsink and cpu, inspect the parts and be sure you dont forget anything important when you put it back together.:P