Owner manual

Asoundproblem
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Nosoundcanbeheardfromthespeakerevenwhenthevolumeisturnedup.
Makesurethat:
•Themutefunctionisoff.
•Theheadphonejackisnotused.
•Speakersareselectedastheplaybackdevice.
Otherproblems
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Yourcomputerdoesnotrespond.
Doeitherofthefollowing:
•Toturnoffyourcomputer,pressandholdthepowerbuttonfor4secondsormore.Ifthecomputerstill
doesnotrespond,removetheacpoweradapterandthebattery.
•Yourcomputermightlockwhenitenterssleepmodeduringacommunicationoperation.Disablethe
sleeptimerwhenyouareworkingonthenetwork.
Thecomputerdoesnotstartfromadeviceyouwant.
Dothefollowing:
1.CheckthesettingsunderStartup➙BootmenuofBIOS.MakesurethattheBootPriorityOrder
optionstartsfromthedeviceyouwant.
2.Alsomakesurethatthedevicefromwhichthecomputerstartsisenabled.UndertheStartup➙Boot
menu,makesurethatthedeviceisincludedintheBootPriorityOrderlist.
3.PressF12whentheLenovologoappearsonthescreenwhilethecomputerisstartinguptoselect
thedeviceyouwantthecomputerstartsfrom.
Theconnectedexternaldevicedoesnotwork.
Makesurethat:
•DonotconnectordisconnectanyexternaldevicecablesotherthanUSBcableswhilethecomputeris
turnedon;otherwise,youmightdamageyourcomputer.
•WhenusingahighpowerconsumptionexternaldevicessuchasanexternalUSBopticaldrive,use
externaldevicepoweradapter.Otherwise,thedevicemaynotberecognized,orthesystemmightbe
turnedoff.
Formoretechnicalsupport,gotohttp://www.lenovo.com/support
Chapter9.Troubleshootingcomputerproblems51