I have a clone computer with the following specification, Intel i5, 4GB RAM, 250GB hadr disk, ATI Radeon graphic card, PCI-E network adapter running on Window 7 Pro 32bit.
The problem is the computer unable to shutdown. When I shutdown it will go off and after a second or so it will turn on back again by itself and boot back to Window.
I have try changing the power supply, reformat the Window, change hard disk and change RAM but no solution. The last resort of course is to change the motherboard which I try not to. That's why I am here to ask for help.
That BIOS setting about restarting after power interruption (if you have it)- it should not be the problem in your case, but try turning it off. I don't have it set to auto restart because if a power outage is bad the power line auto-restart system will try to reconnect power 3 times before giving up, and I don't want my computer subject to that behaviour. But yes, the mb firmware/hardware controls switch-on behaviour, adjustable via BIOS settings.