The Lenovo ThinkCentre M720q has a CMOS reset jumper on the motherboard that can be used to reset the BIOS password. Here's how:
is by using the located on the system board. Step-by-Step Instructions: lenovo thinkcentre m720q bios password reset
Her hands trembled as she plugged the USB drive containing that hash into the M720q and powered it on. The Lenovo ThinkCentre M720q has a CMOS reset
Marta nodded. “A supervisor password. On these ThinkCentres, that’s not a simple CMOS battery pull. It’s stored in flash memory. If we can’t get past it, the machine is a brick.” the machine is a brick.”