it can be the powebox..i experienced this before..many times..kaboom twice because my voltage when i direct plug is very bad - my cpu died - new one die instantly basically all my pc new one always die on me one less than 1 month
now i got a regulator but then again i can sense its a bit cracky spike sound coming out from my speaker......
if the screen blank ...but cpu working..... then graphic or ram
lightning strike.......filinlee surf during thunderstorm ar?? your whole pc sure explode instantly .... including you "goreng"...
dont play with thunder!