820-00850 (95 laptops all same problem) Powers on but no display

I have 100 of these laptops that showed up at my door.
They appear to power on and pull current and charge the battery.

No display.
Power rails are present.
I was unable to get them into DFU.

Ideas?
 

2informaticos

Administrator
Staff member
Did you test USB activity and external video?

Which voltages do you get on the board?
If machine turns on, all AWAKE and SLPS2R voltages should be present; so should enter to DFU.
 
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