Before opening your laptop, try this: Sometimes the T470 locks the BIOS based on hardware hashing. Power on without RAM. If it prompts for a password, this won't help. But on 1% of units, removing the storage forces a default state. (It’s free, so try it.)
Disclaimer: This information is intended for recovering access to devices you legally own or have explicit permission to service. Bypassing security on stolen devices is illegal. lenovo t470 bios password reset verified
Pros
While some generic guides suggest removing the CMOS battery to reset BIOS, this only clears the date, time, and basic settings—it will not clear the Supervisor Password on a T470. Verified Advanced (Unofficial) Methods Before opening your laptop, try this: Sometimes the
Before opening your laptop, try this: Sometimes the T470 locks the BIOS based on hardware hashing. Power on without RAM. If it prompts for a password, this won't help. But on 1% of units, removing the storage forces a default state. (It’s free, so try it.)
Disclaimer: This information is intended for recovering access to devices you legally own or have explicit permission to service. Bypassing security on stolen devices is illegal.
Pros
While some generic guides suggest removing the CMOS battery to reset BIOS, this only clears the date, time, and basic settings—it will not clear the Supervisor Password on a T470. Verified Advanced (Unofficial) Methods
