IBM ThinkPad T40 series Service And Troubleshooting Guide

Chapter 2. Solving computer problems
Diagnosing problems .........12
Troubleshooting...........12
Error messages ..........12
Errors without messages .......17
A password problem ........18
A power switch problem .......19
Keyboard problems ........19
UltraNav
™
problems ........20
Standby or hibernation problems ....21
Computer screen problems ......24
Battery problems .........26
Hard disk drive problems ......27
A startup problem .........28
Other problems ..........29
Starting IBM BIOS Setup Utility .....31
Recovering pre-installed software .....32
Upgrading the hard disk drive ......34
Replacing the battery .........37
© Copyright IBM Corp. 2002 11

IBM ThinkPad T40 series Specifications

General

Processor	Intel Pentium M (1.3 GHz - 1.7 GHz)
Chipset	Intel 855PM
Hard Drive Interface	ATA-100
Modem	56K V.92
Release Year	2003
RAM	256 MB - 2 GB (DDR SDRAM)
Storage	30 GB - 80 GB (HDD)
Display	14.1"
Graphics	ATI Mobility Radeon 7500 or 9000
Optical Drive	DVD-ROM/CD-RW Combo
Operating System	Windows XP Professional
Weight	2.2 kg (4.9 lbs)
Battery	Li-Ion
Wireless	Intel PRO/Wireless 2100
Ethernet	10/100 Mbps
Ports	2 x USB 2.0, VGA, RJ-11, RJ-45, Audio In/Out
Dimensions	311 mm x 255 mm x 26.6 mm (12.24" x 10.04" x 1.05")