Lenovo ThinkPad 240Z ThinkPad 240 User's Reference that shipped with the syste - Page 108
LCD problems, Problem, Action, Start, Settings, Control Panel, Display, Adapter, Advanced Properties
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Troubleshooting charts LCD problems Problem The screen is unreadable or distorted. Incorrect characters appear on the screen. The screen stays on even after you power off the computer. Missing, discolored, or bright dots appear on the screen every time you power on your computer (TFT display model.) Screen is blank Action Make sure that: The ThinkPad display driver is installed correctly. 1. Click Start and move the cursor to Settings; then click Control Panel. 2. Double-click Display. 3. Select the Settings tab in the "Display Properties" window. 4. (For Windows 98) Click Advanced...; then click the Adapter tab. (For Windows 95) Click Advanced Properties. The "Adapter/Driver Information" window appears.Make sure that the display driver information is correct. The refresh rate setting is set to your display resolution and color depth by doing the following: 1. Start the ThinkPad Configuration program. 2. Click LCD . 3. Click Properties. 4. Make sure the settings in the "Display Properties" window are correct. 5. Click OK to close the window. Did you install the operating system or application program with the correct procedure? If they are installed and configured correctly, have the computer serviced. Push and hold the power switch for about five seconds; then release it to turn off your computer. Turn it on again. This is a characteristic of TFT technology. Your computer display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time. Make sure that the screen timer is set correctly (not DIMM). 96 ThinkPad 240 User's Reference