Now realised what I didn't do was re-assemble & test again with it booted up.......

Finally got a chance to get back to this.

Motherboard out, no obvious signs of damage under magnification.

All pins show 0 volts with power connected except last 3 pins (opposite end of connector from pointer) which show 18.5 v which is power supply rated output.

I think she's dead, Jim 🤣

Many thanks,

I'll give it a go.

👍

Hello all,

First time posting, so please be gentle 😂

HP Elitebook 850 G2 Win 10 with Intel HD Graphics 5500.

Screen dead, but booting.

I connected it to an external monitor via both VGA & Display Port outputs and external monitor works fine, nothing with F4 or detecting another screen in settings.

Got a replacement panel, still dead & still displayed to external screen as before.

Removed CMOS & left it. CMOS reconnected, all as before, no panel, external monitor works.

Got replacement cable...