The problem that I am having is that my computer will not boot up. One day it worked fine and the next time that I tried to start it - nothing. Pressing the power switch did absolutely nothing.
Over the years, I have experienced this same type problem with other computers and every time it turned out to be the power supply. Taking for granted that this was the problem, I ordered and installed a new power supply. To my surprise, the computer was still dead. I then tested the new power supply, thinking that I got a dud. I disconnected the 24 pin plug from the motherboard, jumpered pins 15 and 16, and pluged the power cord into a receptacle. The power supply fan immediately came on. I then tested all of the remaining pins. Every voltage on every pin tested out good. I even checked every ground pin on the connector, all good.
At this point, I thought that is must be the motherboard. So I ordered a refurbished motherboard and installed it. Still nothing. I then ordered a new power switch and installed that. Still nothing. I double checked every connector to be sure they were all properly connected.
At this point, I am baffled. I know that the power supply tests good. The only thing that I can think of is that the refurbished motherboard is at fault, but that is just a guess. Any ideas?
The computer is a HP Pavilion Slimline S3713W. The product number is NC733AA#ABA.