Question Why do I have to use jumper on PSU for my computer to turn on?

[johndoe17]

My PC works fine when it's on, but when I turn it off I am unable to turn it back on. Same thing happens when I put it on sleep; if I try to wake it, it'll try to turn on for a second(case power LED turns on/fans spin for half a second) then it gives up and shuts off. I found a "fix" for it but it is very tedious and not a permanent solution. In order for my computer to turn back on I have to disconnect the 24 pin PSU cable then put a jumper on it, then take off the jumper and reconnect the 24 pin power cable. After I do that the computer will turn on just fine. However I have to do this every time I want to turn my computer back on. Why is this happening and what is the fix?

 

[rgd1101]

make and model of the psu? could be failing