Lenovo B475E Bedienungsanleitung Seite 73

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Seitenansicht 72
Asoundproblem
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Nosoundcanbeheardfromthespeakerevenwhenthevolumeisturnedup.
Makesurethat:
Themutefunctionisoff.
Theheadphonejackisnotused.
Speakersareselectedastheplaybackdevice.
Otherproblems
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Yourcomputerdoesnotrespond.
Doeitherofthefollowing:
Toturnoffyourcomputer,pressandholdthepowerbuttonfor4secondsormore.Ifthecomputerstill
doesnotrespond,removetheacpoweradapterandthebattery.
Yourcomputermightlockwhenitenterssleepmodeduringacommunicationoperation.Disablethe
sleeptimerwhenyouareworkingonthenetwork.
Thecomputerdoesnotstartfromadeviceyouwant.
Dothefollowing:
1.GototheStartupmenuoftheBIOS.ThenselecttheBootmenutomakesurethattheBootPriority
Orderoptionstartsfromthedeviceyouwant.
2.Alsomakesurethatthedevicefromwhichthecomputerstartsisenabled.GototheStartupmenuofthe
BIOS.ThenselecttheBootmenutomakesurethatthedeviceisincludedintheBootPriorityOrderlist.
3.PressF12whentheLenovologoappearsonthescreenwhilethecomputerisstartinguptoselect
thedeviceyouwantthecomputerstartsfrom.
Theconnectedexternaldevicedoesnotwork.
Makesurethat:
DonotconnectordisconnectanyexternaldevicecablesotherthanUSBcableswhilethecomputeris
turnedon;otherwise,youmightdamageyourcomputer.
WhenusingahighpowerconsumptionexternaldevicessuchasanexternalUSBopticaldrive,use
externaldevicepoweradapter.Otherwise,thedevicemaynotberecognized,orthesystemmightbe
turnedoff.
Formoretechnicalsupport,gotohttp://www.lenovo.com/support.
Chapter9.Troubleshootingcomputerproblems59
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