Lenovo ThinkPad X20 English - 12P0280 - ThinkPad X20, X21User's Reference - Page 43

LCD problems

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Troubleshooting LCD problems Problem The screen is blank. The screen is unreadable or distorted. Incorrect characters appear on the screen. The screen stays on even after you turn off your computer. Missing, discolored, or bright dots appear on the screen every time you turn on your computer. Cause and action Press Fn + Home key to make the screen brighter. If problem still persists, do the "Cause and action" in the problem below. 1. Open the Display Properties window. For Windows 2000, Windows ME, Windows 98, Windows95: a. Click the Settings tab. b. Check if the color depth and resolution are correctly set. c. Click Advanced... d. Click the Adapter tab. e. Make sure "RAGE MOBILITY-M AGP" is shown in the adapter information window. f. Click the Monitor tab. g. Make sure the information is correct. For Windows NT: a. Click the Settings tab. b. Check if the color depth and resolution are correctly set. c. Click Display Type... d. Make sure "RAGE MOBILITY-M AGP" is shown in the Display Type window. e. Click OK. f. Click the Test button in the Settings window. g. Make sure the output is displayed correctly. Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced. Press and hold the power switch for 4 seconds or over to turn off your computer; then turn it on again. This is an intrinsic characteristic of the TFT technology. Your computer's display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time. Chapter 5. Solving Computer Problems 39

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Troubleshooting
LCD problems
Problem
Cause and action
The screen is blank.
Press Fn + Home key to make the screen brighter. If problem still per-
sists, do the "Cause and action" in the problem below.
The screen is unreadable or distorted.
1. Open the Display Properties window.
For Windows 2000, Windows ME, Windows 98, Windows95:
a. Click the
Settings
tab.
b. Check if the color depth and resolution are correctly set.
c. Click
Advanced
...
d. Click the
Adapter
tab.
e. Make sure "RAGE MOBILITY-M AGP" is shown in the adapter
information window.
f. Click the
Monitor
tab.
g. Make sure the information is correct.
For Windows NT:
a. Click the
Settings
tab.
b. Check if the color depth and resolution are correctly set.
c. Click
Display Type
...
d. Make sure "RAGE MOBILITY-M AGP" is shown in the Display
Type window.
e. Click
OK
.
f. Click the
Test
button in the Settings window.
g. Make sure the output is displayed correctly.
Incorrect characters appear on the
screen.
Did you install the operating system or application program correctly?
If they are installed and configured correctly, have the computer ser-
viced.
The screen stays on even after you
turn off your computer.
Press and hold the power switch for 4 seconds or over to turn off your
computer; then turn it on again.
Missing, discolored, or bright dots
appear on the screen every time you
turn on your computer.
This is an intrinsic characteristic of the TFT technology. Your comput-
er's display contains multiple thin-film transistors (TFTs). A small
number of missing, discolored, or bright dots on the screen might exist
all the time.
Chapter 5.
Solving Computer Problems
39