Black screen, capslock and numlock flash 5 times
I have an elitebook 1040 g4 that I got as a failed laptop, I had it working intermittently for a while, then it stopped completely.
When I started looking at the issue, I took the board out, found I had knocked a diode off the board.
I've resoldered the diode, seems to be connected and passes a diode test on the multimeter.
Frustrated, can't find a schematic, not sure what's what.