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Troubleshooting Your Computer
Troubleshooting Techniques
Reference Guide 99
• Disable the touch pad: on the Touch tab, select the touch pad device, then select
Disable and click Apply.
If a PS/2 scroll mouse doesn’t work
• The built-in pointing devices must be disabled for the mouse’s scroll feature to work.
In the BIOS Setup utility, make sure the PS/2 Pointing Devices option in the System
Devices menu is set to Auto. See “To run the BIOS Setup utility” on page 78.
• Suspend or shut down the computer before you attach the scroll mouse, so that it will
be detected properly.
If you want to use the touch pad again, you must suspend or shut down the computer
before you detach the scroll mouse.
• Test the keyboard and pointing devices with the DiagTools diagnostics. See “Testing
the Hardware” on page 113.
If the embedded numeric keypad doesn’t work
• To type numbers, make sure Num Lock is on.
• Make sure the embedded Keypad Lock (Fn+F8) is on—or that you press and hold the
Fn key to temporarily access the embedded keypad.
• Don’t touch the touch pad or pointing stick while booting or resuming.
If left CTRL+left ALT doesn’t work on an external keyboard
• Left CTRL+left ALT on an external keyboard should work like the Fn key. However,
only Fn+F5, Fn+F7, and Fn+F12 are supported on an external keyboard.
• In the BIOS Setup utility, make sure External Fn Key is enabled in the System
Devices menu. See “To run the BIOS Setup utility” on page 78.
If you can’t type the euro symbol
• Hold ALT GR when you press the marked key.
• The euro symbol is not on the U.S. English keyboard. Make sure the embedded
keypad is active (Fn+F8) and Num Lock is on, then hold ALT while typing 0128 on
the numeric keypad.
• Support for the euro symbol requires software available from Microsoft. This
software is installed in the factory software, but may not be included with retail
Windows.