all fuses are ok. both pins 1 and 4 show 5v...

thank you, shorts gone now.
I have all volts and with the bench 12v injected it goes up to 0.3a for a few seconds like it should. problem is that it still doesn't power on.
No lights, no beep, nothing when power button pressed. The only sign of life is when I press the eject button it beeps 3 times each time but still no light or anything. I've tried different bios found here with no luck. Any idea guys what it might be? It is not the same as other common fault with 3 beeps when power cord is connected....