M275 Notebook User's Guide

291
Troubleshooting
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Keyboard
The built-in keyboard does not work
■ Attaching a PS/2 keyboard to your port replicator while your convertible
tablet PC is running may deactivate the built-in keyboard.
The external keyboard does not work
■ Make sure that the keyboard cable is plugged in correctly.
■ Remove all extension cables and switchboxes.
■ Clean the keyboard by using an aerosol can of air with a narrow, straw-like
extension to remove dust and lint trapped under the keys.
■ Try a keyboard that you know works to make sure that the keyboard port
works.
■ If you spilled liquid in the keyboard, turn off your convertible tablet PC
and unplug the keyboard. Clean the keyboard and turn it upside down to
drain it. Let the keyboard dry before using it again. If the keyboard does
not work after it dries, you may need to replace it.
A keyboard character keeps repeating or you see a “Keyboard stuck”
or “Key failure” error message
■ Make sure that nothing is resting on the keyboard.
■ Make sure that a key is not stuck. Press each key to loosen a key that might
be stuck, then restart your convertible tablet PC.
Memory
You see a “Memory error” message
■ Make sure that the memory modules are inserted correctly in the memory
bay slots. For more information, see “Adding or replacing memory” on
page 255.
■ Use PC Doctor or a third-party diagnostic program to help determine if a
memory module is failing. For more information, see “Adding or replacing
memory” on page 255.
You see a “Not enough memory” error message
■ Close all programs, then restart your convertible tablet PC.