Lenovo ThinkPad Edge E420 - Keyboard and Other Pointing Devices

Keyboardandotherpointingdevices
Thefollowingarethemostcommonkeyboardandotherpointingdevicesproblems:
UltraNavproblems
•Problem:Thepointerdriftswhenthecomputeristurnedonorafteritresumesnormaloperation.
Solution:ThepointermightdriftwhenyouarenotusingtheTrackPointduringnormaloperation.This
isanormalcharacteristicoftheTrackPointandisnotadefect.Pointerdriftingmightoccurforseveral
secondsunderthefollowingconditions:
–Whenthecomputeristurnedon.
–Whenthecomputerresumesnormaloperation.
–WhentheTrackPointispressedforalongtime.
–Whenthetemperaturechanges
•Problem:TheTrackPointortouchpaddoesnotwork.
Solution:MakesurethattheTrackPointortouchpadissettoEnabledintheUltraNavDeviceSetting.
Notes:ToopentheUltraNavDeviceSetting,
ForWindows7:
1.ClickStart,andthenclickControlPanel.
2.ClickHardwareandSound.
3.ClickMouse,andthenclicktheUltraNavtab.
ForWindowsXP:
1.ClickStart,andthenclickControlPanel.
2.ClickPrintersandOtherHardware.
3.ClickMouse,andthenclicktheUltraNavtab.
Keyboardproblems
•Problem:Allorsomekeysonthekeyboarddonotwork.
Solution:Makesurethatthecorrectdevicedriverisinstalled.
ForWindows7:
1.ClickStart➙ControlPanel.ChangetheviewoftheControlPanelfromCategorytoLargeicons
orSmallicons.
2.ClickKeyboard.
3.SelecttheHardwaretab.IntheDeviceProperties,makesurethattheDeviceStatusisThisdevice
isworkingproperly.
ForWindowsXP:
1.ClickStart➙ControlPanel.
2.ClickPrintersandOtherHardware,andthenclickKeyboard.
3.SelecttheHardwaretab.IntheIntheDeviceProperties,makesurethattheDeviceStatusisThis
deviceisworkingproperly.
Ifkeysonthekeyboardstilldonotwork,havethecomputerserviced.
•Problem:Anumberappearswhenyoutypealetter.
Solution:Thenumericlockfunctionison.Todisableit,pressShift+ScrLkorNmLk.
Chapter10.Troubleshootingcomputerproblems143