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Once inside, specific sequences (like pressing the Space bar twice) are followed to clear the EEPROM's password sector. Restoration

Resetting a BIOS password on a laptop you do not own may violate local laws. This guide is for personal, legally owned devices only.

Pros

Use a "patcher" tool (available in specialized forums like BadCaps or BIOS-Mods) to clean the TPM/Password section of the code. Write the "cleaned" file back to the chip. Method 5: Buying a Pre-Programmed BIOS Chip

While older ThinkPads (pre-T430) allowed shorting specific pins (SCL/SDA) during boot to bypass verification, this method is widely reported to be ineffective on the T470 due to newer security architectures.

Extremely expensive; often exceeds the resale value of the laptop. 2. Hardware EEPROM Flashing (Advanced)