pcpartner problem with powersupply
Yes, there could be someting wrong with the motherboard because it has malfunction, or defect. And if you tested the power supply on another computer and it ran good, then it is your motherboard that is bad.
Check the BIOS settings - looks like "Power on after AC fail" is set to "ON".
Patched and tested BIOSes are at http://wims.rainbow-software.org
UniFlash - Flash anything anywhere
UniFlash - Flash anything anywhere