PC Power Switch

[rockman_d]

Basically, my PC will power up immediately after I plug in the power cord or turn on the PSU power switch. Normally, I should have to turn on the power switch on the case before it powers up. As far as I can remember, it never used to do this. I've tried another PSU, but I still have the same problem. So, could the case switch possibly be faulty?

 

[burn-e86]

check your BIOS settings, i'm guessing that you have the default 'after power failure' selection set to power on, The case switch is a Push to make button, if it was faulty either it would not work at all or it would start up and shut down 4 seconds later.

 

[rockman_d]

check your BIOS settings, i'm guessing that you have the default 'after power failure' selection set to power on, The case switch is a Push to make button, if it was faulty either it would not work at all or it would start up and shut down 4 seconds later.

I didn't realize there was such a setting in the BIOS, and I'd love to check it, but my motherboard was fried (4 beeps = System timer failure) by this problem while I was switching out a GPU. My PSU appeared to be acting up as well forcing me to reset it with the red button at the back of it. Could this be related?

 

[Mugz]

"Unplug the power cord before you pick up the screwdriver."

Probably is related, although from my PC-shop techie days I used to see this issue quite frequently, no matter what the BIOS setting was. It seems as if what happens is that the Power-On control circuitry on the motherboard is starting to develop some fault(s). It's not (usually) the PSU.

I could be wrong.

 

[aziraphale]

I guess this is usually a MB/BIOS problem. Check the power switch cable (remove, exchange with reset button or test it with a connection tester). Try a BIOS reset. OR you could update your BIOS entirely. If this all doesn't help the MB has an issue.