Many local repair shops charge $50–$100 for EliteBook 840 G6 BIOS unlock.
Press and hold the simultaneously, then press the Power Button .
Some specialized repair facilities use advanced hardware tools to reprogram the BIOS chip directly (e.g., using a TL866II Plus programmer ) to clear the lock. Methods That Generally DO NOT Work for G6 Models hp elitebook 840 g6 bios password reset work
This is a common procedure for desktop PCs, but its effectiveness on the 840 G6 is disputed.
Use a tool like or manual hex editing:
HP EliteBook 840 G6 Go to product viewer dialog for this item.
If you previously configured HP SpareKey , you can recover access by answering three personal identification questions . Many local repair shops charge $50–$100 for EliteBook
A prompt will appear to "press F7 for HP SpareKey Recovery." Press it.