Thinkpad T490 Bios Password Removal: Difference between revisions

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

Revision as of 21:00, 14 January 2024

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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.

Power-On/Supervisor/System Management Password promt. (Figure 1)

Hard-Drive Password promt -- This guide does not apply! (Figure 2)

Symptoms

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

Solution

If the issue has a single, specific solution, provide it in this section and delete the sub-headers below. Otherwise, if there are multiple potential causes for the problem, outline the process of identifying the root cause and offer corresponding solutions below.

Diagnostic Steps

Repair Steps

@@ Line 12: / Line 12: @@
 This guide does '''not''' apply to hard-drive passwords.
-[[File:Placeholder image.jpg|thumb|Example image (Figure 1) -- No image yet. Help expand this page by uploading it!]]
+[[File:Lenovo Power-On, Supervisor, or System Management password prompt.jpg|thumb|Power-On/Supervisor/System Management Password promt. (Figure 1)]]
+[[File:Lenovo_Hard%3DDrive_Password_Prompt.jpg|thumb|Hard-Drive Password promt -- This guide does not apply! (Figure 2)]]
 ==Symptoms==