Psu failed replaced motherboard still no bios

My PSU failed suddenly. Replaced it with a new corsair, Plugged in things turned back on but only the fans and hd. I replaced the motherboard and still no bios could it be the cpu?
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  1. I doubt it. Cpus rarely fail unless the heatsink isn't attached properly. I suggest a bare bones test on a non conductive surface with just the cpu/heatsink, one stick of your old memory, and onboard video. You can also use a keyboard in case it posts to change the boot order and exit. Touch the power switch cluster of pins with a flathead screwdriver until the board fires up. Needless to say, you'll need the 24 pin and 4/8 pin power supply leads connected also. If they don't reach the board, remove the power supply from the case.
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