Lenovo ThinkPad T400s Service Manual

About this manual

This Service Manual for the Lenovo ThinkPad T400s covers hardware maintenance tasks such as using the Lenovo ThinkVantage Toolbox diagnostic program, accessing PC‑Doctor for Rescue and Recovery, and managing system logs. It includes step‑by‑step instructions for running diagnostics on Windows 7, Vista, and XP, as well as guidance on installing the latest toolbox software.

The manual also details procedures for handling power‑on and hard‑disk passwords, including how to remove a forgotten user HDP when the master HDP is known. It explains BIOS access, password entry, and the steps required to clear both user and master hard‑disk passwords, with notes on service limitations.

What's inside

• Tech Support Form
• Battery Rundown
• View Test Log
• Print Log
• Full Erase Hard Drive
• Quick Erase Hard Drive
• Lenovo ThinkVantage Toolbox
• PC‑Doctor for Rescue and Recovery
• Power‑On Password
• Hard‑disk Password Removal

Specifications

Frequently asked questions

How do I run the Lenovo ThinkVantage Toolbox in Windows 7?

While Windows is running, press the ThinkVantage button to launch the toolbox.

How can I remove a forgotten hard‑disk password on a ThinkPad T400s?

If you know the master HDP, start the computer, press F1 to enter BIOS, select the hard‑disk password option, enter the master HDP, and confirm to clear both user and master passwords.