Thinkpad T490 Bios Password Removal

Thinkpad T490 Bios Password Removal
Device	Thinkpad T490
Affects part(s)	MEC1633
Needs equipment	Soldering Iron; Glasgow Interface Explorer (or other EC programmer)
Difficulty	◉◉◉◌ Hard
Type	Soldering, Software

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Problem description

This guide describes how to remove a Power-On / Supervisor / System Management Password that the laptop might ask for during boot, or while entering setup.

This guide does not apply to hard-drive passwords.

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Symptoms

• The screen shows the BIOS password icon (Figure 1)
• The screen must not show the HDD password icon (Figure 2)

Solution

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