DELL 1909 ユーザーズマニュアル

This section provides troubleshooting 

information for your computer. If you cannot 

solve your problem using the following 

guidelines, see “Using Support Tools” on 

page 30 or “Contacting Dell” on page 44.

Some or all multi-touch features are not 
working  — 

Certain multi-touch features may be 

•

disabled. To enable multi-touch features, 

click the Multi-touch settings icon in the 

system tray.
Certain touch screen features may be 

•

disabled. To enable the touch screen 

features, click Start 

→ Control Panel→ 

Pen and Input Devices.
The multi-touch feature may not be 

•

supported by the application.

If the touch screen starts losing its  
sensitivity — The touch screen may have 

foreign particles (such as sticky notes) that are 

blocking the touch sensors. To remove these 

particles:

Turn off the computer.

Disconnect the power cord from the wall 

outlet.

Use a clean, lint-free cloth (can spray mild, 

non abrasive cleaner or water on cloth if 

needed, but not on screen) and wipe the 

surface and sides of the touch screen to 

remove any dirt or fingerprints.