: A "System Disabled" message will appear with an 8-digit or 10-digit code (e.g., i 12345678 or A 12345678 ).

: Remove the main battery and charger. Open the back panel and disconnect the small coin-cell CMOS battery for at least 15 minutes before reconnecting. Method 4: Hardware Reprogramming (Advanced)

This method exploits a "backdoor" code generated by the system after multiple failed attempts.

Some ProBook models generate a "System Disabled" code after three incorrect password attempts. Enter a random password .

Resetting a BIOS password on an HP ProBook 440 G2 Go to product viewer dialog for this item.

This works on older HP models (circa 2012–2015). Success isn't guaranteed if BIOS is updated.

HP Support sends you the file, which you place on a FAT32-formatted USB drive. You boot the laptop with the drive inserted and a specific key combination to clear the chip.

HP has limited this service for older out-of-warranty models like the G2 in recent years. 🔧 Method 4: Hardware Reprogramming (Advanced)

Enter an incorrect password until the prompt appears.