Take out the CMOS battery and wait 10-25 minutes before putting it back in. The computer must not be able to get power from anywhere for this to work. Make sure to power down the computer, unplug the power cables and unplug any USB devices if they are powered.
Removing the CMOS battery like the one shown in the picture causes the system to lose all CMOS settings including the password. The other way to remove a BIOS password is simply remove the CMOS battery.
HP PROBOOK WINDOWS 10 PASSWORD RESET TOOL NONTRIAL HOW TO
How to Remove BIOS Password on HP by Removing the CMOS Battery And then you must contact HP for assistance. If you do not answer the questions correctly in the three attempts, you will be locked out of your computer. If you successfully answer the questions, you are granted access and you can reset the BIOS password. Press F7 key, the HP SpareKey wizard pops up and prompts you for the answers to the three personal identification questions. If you have typed your BIOS password incorrectly three times, you'll be presented with the screen prompting you to press F7 for HP SpareKey Recovery. Turn on the computer and immediately press the ESC key to display the Startup Menu, and then press the F10 to enter BIOS Setup. HP SpareKey couldn't reset HP administrator password, so we have to think of other ways, such as Windows Password Key, a nice Windows password recovery tool, to do that. When setting up the SpareKey, you are prompted to provide answers for a sequence of three predetermined personal identification questions. Note: HP SpareKey is a utility that helps you, or the administrator of the computer, recover lost system passwords, such as the power-on, drive lock, or BIOS passwords.
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