Same struggles when trying to POST (short bootloops and then 'no signal' when it finally stays on, and when waiting for a longer period it just shuts back down itself).
Tested with known good components, with iGPU and with a discrete GPU....
Both chips reprogrammed and resoldered back to the motherboard however the same issue still remains, as soon as I plug the charger in the power button led starts flashing, no other signs of life except for a solid charging light on the side of the laptop.
Edit: All ideas / leads on what to try next are always welcome....
I'm in need of a repaired/modified Asrock H81 Pro BTC rev 1.0 Bios, I will attach the bad one as zipped.
The motherboard is struggling to even POST in its current state, but I've had it to POST a couple times for me to see a "ME FW Downgrade - Request MeSpiLock Failed" error message, and even more rarily a couple of times booting straight to windows with a known good windows drive and being stable for a short while.
It's been a while since I've worked on this motherboard but if I recall correctly, I have flashed a couple of bios...
I'm in need of a repaired/modified HP ZBook 15 G3 Bios and/or EC, I will attach the bad ones as zipped (Bios + EC).
The symptom of the laptop is flashing power button led, unplugging battery and/or CMOS battery didn't help so I might aswell try to solder & reprogram the onboard chips before declaring the motherboard as faulty. ...
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