Lenovo M91p 4480 User Manual

Also see for 4513: Hardware Maintenance Manual User guide Hardware Maintenance Manual

Contents

• If you are using an Enhanced Performance USB keyboard and one or more of the Rapid Access buttonsare the only keys that are not working, these buttons might have been disabled or have not been assignedto a function. Use the help system in the Enhanced Performance Customization Keyboard program tohelp diagnose problems with the Rapid Access buttons.• On the Windows Vista operating system, do the following:1. Click Start ➙ Control Panel.2. Click Hardware and Sound.3. In the Keyboard topic, click Check keyboard status.4. Click Properties for keyboard details and to see if the keyboard is working properly or not.• On the Windows 7 operating system, do the following:1. Click Start ➙ Control Panel.2. Click Hardware and Sound.3. Click Devices and Printers.4. Double-click USB Enhanced Performance Keyboard. The USB Enhanced Performance KeyboardCustomization program starts.If these actions do not correct the problem, have the computer and keyboard serviced. See Chapter 11“Getting information, help, and service” on page 111 for details.The mouse or pointing device does not workSymptom: 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 thecomputer. Depending on the type of mouse you have, the mouse cable will connect to either themouse, serial, or USB connector. Some keyboards have integrated USB connectors that can be usedfor 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 BIOSsettings. See “Enabling or disabling a device” on page 79.If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” onpage 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, andservice” on page 111.The pointer on the screen does not move smoothly with the mouseSymptom: The pointer on the screen does not move smoothly with the mouse.Action: Erratic movement of the mouse pointer is generally caused by a buildup of dirt, oils, and othercontaminants on the ball inside the mouse. Clean the mouse. See “Optical mouse” on page 87 forinstructions.The fingerprint reader does not workSymptom: The fingerprint reader does not work.Action: The following could cause the fingerprint reader not to operate properly:• Not enrolling your fingerprint correctly.• Scratching the surface of the reader with a hard, pointed object.98 ThinkCentre User Guide