Beep Codes - Dell PP39L Setup Manual

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:
1. Turn off the computer.
Disconnect the power cord from the wall
2.
outlet.
CAUTION: Do not use water or a cleaning
liquid to wipe the touch screen.
3. 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.

Beep Codes

Your computer might emit a series of beeps
during start-up if the monitor cannot display
errors or problems. The following repetitive
beep codes help you troubleshoot problems
with your computer.
NOTE: To replace parts, see the Service
Manual on the Dell Support website at
support.dell.com.
One beep — Possible motherboard failure; BIOS
ROM checksum failure
Contact Dell (see "Contacting Dell" on page XX).
Two beeps — No RAM detected
• Remove the memory modules, reinstall
one module and restart the computer. If
the computer starts normally, reinstall an
additional module. Continue until you have
identified a faulty module or reinstalled all
modules without an error.
Solving Problems
43