Comp will not boot no post or beeps

[Guest]

Hello,
my computer used to work fine now it will not post or anything do i have a dead motherboard because i have changed everything and still the same

 

[tecmo34]

By change everything, do you mean "everything..." RAM, CPU, GPU, PSU, HDD &/or Case (case's power buttons have known to go bad). If that is the case, I would say the motherboard has died.