820-2915 No chime no video


New member
I have this 820-2915 that powers on but I don't get chime, video or light on USB mouse. No liquid on the board.
CPU Vcore - .738V
GPU Vcore - .903V
Tried another BIOS for testing with no success.

Any thoughts?

Thanks, have a good one.


New member
if you plug external hard drive with os x installed have you led activty bliking ?,
if not heat gpu 120°C and try


Staff member
So board works, has even USB activity.
PRAM reset should work then.
Post some voltages from LCD connector.


New member
USB activity on the external USB SATA adapter but not on the mouse. I double checked the mouse to be sure it was fine. Weird...
PRAM has not been working. I will try again and post SW_LCD voltages.
Thanks again!