You’ll need to hex-edit the dump to remove the password hash. This is not beginner-friendly but 100% effective.
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.) lenovo t470 bios password reset verified
| Method | Difficulty | Success Rate | Cost | Time | | :--- | :--- | :--- | :--- | :--- | | SDA/SCL Short | Moderate (hardware) | 80% | $0 | 10 min | | SPI Programmer | Advanced | 100% | $15 | 1 hour | | Lenovo Service | Easy (proof needed) | 100% | $0-$100 | 3 days | You’ll need to hex-edit the dump to remove
For a Lenovo ThinkPad T470, a "verified" BIOS password reset depends entirely on which password you are trying to bypass. Standard consumer-grade methods like removing the CMOS battery are effective for the Supervisor Password on this model. Official Lenovo Policy Power on without RAM