-upon power up PC boots and works ok for few minutes if you
disconnected the HDD( I guess until something heats up inside the
supply)
and if you connect hdd and external usb pen drive then upon power up ,
no graphics to monitor at all although PC seems to boot again
-tested motherboard with another supply and replaced the big 16v
capacitors in power supply but still the same,what else(component)
could be wrong with it?