ganito din problema ko kaso d ko pa natingnan power supply no idea ako about hardware. mag kano kaya paayus ng ganitong problema sa cpu sinong may alam ng price.
Power supply fan is oK? then if it is not ok, unplug from avr or wall socket, open side panel of cpu casing,
locate the 24 pin socket, heat sink connector, 4pin ground, power cable for the hard drive and disk drive, remove memory module and clean this module thoroughly, vacuum it and reinsert everything then turn it on.