System will not boot
My PC is normally connected to a APC battery back up. The PC failed to boot up yesterday. The cooling fans would start, run for a few seconds, then turn off. I finally got the PC to boot up after disconnecting the main power cord from the tower, then plugging it back in. When it did came on, boot up and load Windows, all voltages were at the normal readings. So I assumed that maybe the power plug was loose and I had fixed the problem.
This morning the APC backup started sounding the alarm with the 'overload' light flashing. The PC was powered off at the time and had not been powered on yet today. Nothing connect to the battery backup was turned on. I removed the APC battery backup and plugged everything into a surge protector. When I pressed the power button on the PC, I got the fans to come on, run for a few seconds, then turn off, just like yesterday.
When I plug in the APC battery backup with nothing connected to it, it is now flashing the 'replace battery' light. I ASSUME that the APC unit failure has nothing to do with the PC power up failure. However, I felt that maybe it does mean something to the experts.
Next I replaced the CMOS
battery and reset the BIOS
, removed and reconnected the 24 pin power connector to the mother board, took the surge protector out of the loop and connected the tower directly to the wall outlet, and used a different wall outlet. Non of the above had any effect on the PC boot failure. I did finally get the PC to boot up and load windows and I think it was just a matter of enough attempts.
The motherboard is a MSI K8N Neo4-f. The power supply is an Antec smartpower 450 watt. All PC parts were purchased in May 2006 so everything is going on 5 years old. I have looked over the motherboard and do not see any swollen or leaking capacitors.
Now I am afraid to power down until I have some spare parts on hand.
But what parts? Does this sound like a power supply problem, a mother board problem, or something else? I live in a remote area with very limited local PC parts so I will most likely have to order replacement parts online.
Any suggestions or advice would be appreciated.