Check with the previous owner or your company’s IT helpdesk.
Wait 30 seconds, then press and hold the power button to drain residual energy. lenovo t470 bios password reset verified
If you are not comfortable opening your laptop and working with circuit boards, the safest "verified" method remains contacting for a motherboard replacement or seeking a professional technician who specializes in EEPROM reprogramming. Check with the previous owner or your company’s