Keyboard, Mouse, Or Pointing Device Problems - Lenovo 10A4 Hardware Maintenance Manual

If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See
"Lenovo Solution Center" on page 52. If you need technical assistance, see "Lenovo Support Web site" on
page 32.
"No Operating System Found" message or the system not starting from the correct
hard disk drive
Symptom: "No Operating System Found" message or the system not starting from the correct hard disk
drive
Actions:
• Ensure that all hard disk drive signal cables and power cables are connected correctly. Refer to
"Replacing the primary hard disk drive" on page 122.
• Ensure that the hard disk drive your computer starts from is listed as the first startup device in the Setup
Utility program. Refer to "Selecting a startup device" on page 57.
Note: In rare cases, the hard disk drive with the operating system might get corrupted or damaged. In such
cases, you might need to replace the hard disk drive. Refer to "Replacing the primary hard disk drive" on
page 122.
If these actions do not correct the problem, run the diagnostic program Lenovo Solution Center. See
"Lenovo Solution Center" on page 52. If you need technical assistance, see "Replacing the primary hard disk
drive" on page 122.

Keyboard, mouse, or pointing device problems

Select your symptom from the following list:
• "The mouse or pointing device does not work" on page 42
• "The pointer on the screen does not move smoothly with the mouse" on page 43
• "The fingerprint reader does not work" on page 43
• "The wireless keyboard does not work" on page 43
The mouse or pointing device does not work
Symptom: The mouse or pointing device does not work.
Actions:
• Verify that the mouse or pointing-device cable is securely attached to the correct connector on the
computer. Depending on the type of mouse you have, the mouse cable will connect to either the mouse,
serial, or USB connector. Some keyboards have integrated USB connectors that can be used for a USB
mouse or pointing device.
• Verify that the device drivers for the mouse or pointing device are installed correctly.
• If you are using a USB keyboard or mouse, verify that the USB connectors are enabled in the BIOS
settings. See "Enabling or disabling a device" on page 57.
If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see "Lenovo Support Web site" on page 32.
Optical mouse
This section provides instructions on how to clean an optical mouse.
An optical mouse uses a light-emitting diode (LED) and an optical sensor to navigate the pointer. If the
pointer on the screen does not move smoothly with the optical mouse, you might need to clean the mouse.
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