Move the jumper to the "Maintenance" position (pins 2-3 or 2-4 depending on the specific board revision) [8, 10]. Clear the Password Reattach the power cord and turn the computer on [8, 10].
is set and remains after a CMOS clear, the motherboard may require professional service or replacement, as Lenovo designs these for high security. Hardware Maintenance Manual lenovo thinkcentre m720q bios password reset
Reconnect the power cord and turn the computer on. You will hear a series of 4-5 beeps (or double beeps), indicating the CMOS is clearing. Move the jumper to the "Maintenance" position (pins
Before you open the case, try these low-effort solutions. Hardware Maintenance Manual Reconnect the power cord and
: Reconnect the power cord and turn on the computer. Leave it on for about 10–30 seconds . You may hear a series of beeps indicating the system is in maintenance mode.
on the motherboard. Simply removing the CMOS battery is often insufficient for modern ThinkCentre models as the supervisor password is typically stored in non-volatile memory [10, 13]. Hardware Jumper Reset Procedure
Pulling the button cell battery off the motherboard for a few seconds will not clear the password on this model.