Lenovo K49 Notebook User Manual Page 59
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Incorrectcharactersappearonthescreen.
Checkwhetheryouhaveinstalledtheoperatingsystemorapplicationscorrectly.Ifyes,havethecomputer
serviced.
WhenIturnonthecomputer,nothingisdisplayedonthescreenandthecomputerdoesnotbeep
whilestartingup.
Makesurethat:
•Thebatteryisinstalledcorrectly.
•Theacpoweradapterisconnectedtothecomputerandthepowercordispluggedintoaworking
electricaloutlet.
•Thecomputeristurnedon.(Pressthepowerbuttonagainforconrmation.)
Iftheseitemsarecorrectlyset,andthescreenremainsblank,havethecomputerserviced.
WhenIturnonthecomputer,onlyawhitecursorisdisplayedonablankscreen.
Restoreyourbackuplesorrestoreyourcomputertothefactorydefaultsettingsusingthepreinstalled
recoveryprogramsonyourcomputer.Iftheproblempersists,havethecomputerserviced.
Myscreengoesblankwhilethecomputerison.
Yourscreensaverorpowermanagementmaybeenabled.Dooneofthefollowingtoexitfromthescreen
saverortoresumefromsleeporhibernationmode:
•PresstheFnkey.
•Pressthepowerbutton.
•PressFn+F2toconrmwhethertheLCDscreenhasbeenturnedoff.
Problemswithdrivesandotherstoragedevices
Thissectionincludesharddiskdriveproblemsandopticaldriveproblems.
Harddiskdriveproblem
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Theharddiskdrivemakesarattlingnoiseintermittently.
Therattlingnoisemightbeheard:
•Whentheharddiskdrivebeginsornishesgettingaccesstodata.
•Whenyoucarrytheharddiskdrive.
•Whenyoucarryyourcomputer.
Thisisanormalcharacteristicofaharddiskdriveandisnotadefect.
Theharddiskdrivedoesnotwork.
GototheStartupmenuoftheBIOS,andthenselecttheBootmenu.Makesurethattheharddiskdriveis
ontheBootpriorityorderlist.IfitisontheExcludedfrombootorderlist,itisdisabled.Selecttheentry
foritonthelistandpresstheShift+1key.ThismovestheentrytotheBootpriorityorderlist.
Opticaldriveproblems
Printtheseinstructionsnowandkeepitwithyourcomputerforreferencelater.
Chapter8.Troubleshootingcomputerproblems45
- UserGuide 1
- ThirdEdition(December2012) 2
- ©CopyrightLenovo2012 2
- Contents 3
- Trademarks................56 4
- Readthisrst 5
- Importantsafetyinformation 6
- Safetyguidelines 7
- Powercordsandpoweradapters 8
- Plugsandoutlets 8
- Powersupplystatement 9
- Externaldevices 9
- Generalbatterynotice 9
- Rechargeablebatterynotice 10
- Lithiumcoincellbatterynotice 10
- Heatandproductventilation 11
- Lasercompliancestatement 12
- Usingheadphonesorearphones 13
- Additionalsafetyinformation 13
- Left-sideview 18
- 63 4 51 2 19
- Right-sideview 20
- Comboaudiojack3Opticaldrive 21
- Frontview 22
- Rearview 22
- Bottomview 23
- Statusindicators 24
- 2Deviceaccessstatusindicator 25
- 4APSindicator 25
- Features 26
- Specications 27
- 14UserGuide 28
- Chapter2.Usingyourcomputer 29
- Checkingthebatterystatus 31
- Usingtheacpoweradapter 32
- Chargingthebattery 32
- Maximizingthebatterylife 32
- Handlingthebattery 33
- Usingthetouchpad 34
- Usingtherecoverybutton 35
- Usingthekeyboard 36
- Numerickeypad 36
- Functionkeycombinations 36
- Chapter2.Usingyourcomputer23 37
- Usingthemediacardreader 39
- Insertingaashmediacard 39
- Removingaashmediacard 39
- Wiredconnection 41
- Hardwareconnection 41
- 1TVcable(notsupplied) 42
- 2Splitter(notsupplied) 42
- 3Cablemodem(notsupplied) 42
- Softwareconguration 43
- Wirelessconnection 43
- Chapter4.Youandyourcomputer 45
- Chapter5.Security 47
- 34UserGuide 48
- Chapter6.Recoveryoverview 49
- .Recoveryoverview37 51
- 38UserGuide 52
- Chapter7.Preventingproblems 53
- Takingcareofyourcomputer 54
- Chapter7.Preventingproblems41 55
- Troubleshooting 57
- Batteryandpowerproblems 57
- Computerscreenproblems 58
- Harddiskdriveproblem 59
- Opticaldriveproblems 59
- Apasswordproblem 60
- Asoundproblem 60
- Otherproblems 61
- 48UserGuide 62
- Wirelessrelatedinformation 63
- ChinaWEEEstatement 65
- 52UserGuide 66
- ChinaRoHS 67
- 54UserGuide 68
- AppendixD.Notices 69
- Trademarks 70
- PartNumber: 72
- PrintedinChina 72
- (1P)P/N: 72
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