Method 1: Unplug the main unit power cord, then remove the chassis and remove the BIOS battery for a few minutes before installing it.
Note: The miniPC power cord must be unplugged, otherwise there is a big chance that it will not be removed.
Method 2: Pull the miniPC power cord and then remove the chassis to find a three-pin jumper near the BIOS battery. It should be inserted above 1, 2 and jump to 2, 3 for 10 seconds.
Note: The miniPC power cord must be unplugged, otherwise the current loop will destroy the BIOS. The jumper was originally a short circuit.
DELL brand host BIOS crack method: Pull the host power cord and then remove the chassis to find the jumper near the BIOS battery. The jumper below writes the password label to pull out the jumper, wait for more than ten seconds and then plug it back. . You can clear the BIOS password.
Note: This method is not only suitable for DELL hosts, because there are many motherboards with the same settings. Only DELL is more commonly used in this method. Previous IBM also liked it, and now like the fourth step.
Lenovo and other brand host BIOS crack method: pull the host power cord and then remove the chassis to find a jumper near the BIOS battery. The jumper below writes the COMS label and pulls out the jumper. Wait for more than ten seconds. go back. You can clear the BIOS password.