What I did:
1)desoldered bios chip
2)flashed bios with verification
3)put laptop together(connecting everything)
4) after connecting bios battery and main battery laptop turned on with f5 and f8 light up and fanspin, then it powered off, then again f5 and f8 light.
5) on second reboot backlight turned on and Im able to enter bios, in main tab I selected reset to manufactures default and exit
6) laptop turned on with f5 and f8 lights, after 1-2min turned off
7) removed motherboard and desoldered bios chip
8) flashed my original dump and soldered it...

Can I just solder wires to bios chip to save time? ofc I will remove bios battery and main battery....

Same, after restoring factory defaults next boot always fails....

Hi. First boot f10 and I'm able to reset to factory defaults. on second boot I'm unable to enter bios. It always freeze on entering setup and restart after few seconds. Bios is still locked....

Can someone unlock bios for HP elitebook 840 g9?
SN# 5CG23634TL...