Pc Reboots Automatically After Power Shutdown

HP Model: P7-1517cb, Product #: H2N50AA#ABA
Auto restarts regardless of Normal or Safe mode after shutdown selected on PC.
Reinstalled Win8.1 and all updates
Flashed BIOS
Ran SFC /scannow, no problems
Hibernate is off
Ran shutdown /f

Anyone have any suggestions as to a cure?

 

Had a Dell doing that, I think it was a wake setting in BIOS, might look in there, for wake on lan, last power state settings, ect.

 

Thanks for the reply. I disabled everything I could find concerning the LAN, and I still have the problem.

 

Nothing there..

 

Check the Power scheme settings.

 

Already tried multiple settings including never. Same results.

 

Under Shut Down when you press the Power button never is not an option.

 

Power scheme settings options.

 

You misunderstand. I'm not using the power button. I'm using the software option to shut the PC down, not the power button. It restarts instead. That's the problem.

 

Thank you, but that does not solve the problem of safely closing everything before shutdown. Gotta be a hardware issue, just can't find it.

 

Thank you. When I press the power button with a program running, the PC reboots.

 

Thanks for the suggestions. The owner decided he wanted his PC returned as he has had the problem for some time. He did not fully inform me of this. He said he has dealt with it in the past and he will deal with it now.

You can close this this request.

Again, thank you very much.