PC power up problem all of a sudden.

[RhysMusique]

Hey, so today when I went to turn my PC on, the power button on the top didn't kick it into life as it so reliably does.

 

Opened case, checked the header and bridged it with a screwdriver as per usual, and still wouldnt turn on.

As I put the Power switch cable back into the header, I accidentally got my finger caught on the wire which pulled the motherboard out a little bit, and the system sparked into life.

 

The only thing I can think of, is there is a motherboard mounting screw that is loose in that area (wrong screw size... no idea how it was the last screw and it was wrong #welldonecorsair), that loose screw may not have been making contact with the motherboard, does it even matter? and may it have been shorting it out?

 

Just checked again and the pc only seems to jump into life if I slightly pull on the corner of the motherboard (as to bridge a connection)... 

 

Any ideas what is causing it, or was i right?

[Goowpea]

Loose screw mounting the MOBO to the case shouldn't be a problem. They're not required. Some cases are mounted on some sort of plastic latches. I think that is caused by loose screw. The MOBO was bending all this time and something like one path on it or some solter might have broke. It's hard to tell. Try disassembling your PC and assemble it on your MOBO box or some flat nonconductive surface.