Dell P08T User Manual page 51

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:
a. Turn off the computer.
b. Disconnect the AC adapter cable from the wall outlet.
CAUTION: Do not use water or a cleaning liquid to wipe the touch screen.
c. Use a clean, lint-free cloth (you may spray mild, non abrasive cleaner or water on the
cloth if needed, but not on the screen) and wipe the surface and sides of the touch
screen to remove any dirt or fingerprints.
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