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14.Turnonthecomputertorestarttheoperatingsystem.
Powermanagement
Powermanagementreducesthepowerconsumptionofcertaincomponentsofthecomputersuchasthe
systempowersupply,processor,harddiskdrives,andsomemonitors.
AdvancedCongurationandPowerInterface(ACPI)BIOS
BeinganACPIBIOSsystem,theoperatingsystemisallowedtocontrolthepowermanagementfeatures
ofthecomputerandthesettingforAdvancedPowerManagement(APM)BIOSmodeisignored.Not
alloperatingsystemssupportACPIBIOSmode.
AutomaticPower-onfeatures
TheAutomaticPower-OnfeatureswithinthePowerManagementmenuallowyoutoenableanddisable
featuresthatturnonthecomputerautomatically.
•WakeUponAlarm:Youcanspecifyadateandtimeatwhichthecomputerwillbeturnedon
automatically.Thiscanbeeitherasingleeventoradailyevent.
•WakeonLAN:Ifthecomputerhasaproperlyconguredtoken-ringorEthernetLANadaptercardthatis
WakeonLAN-enabledandthereisremotenetworkmanagementsoftware,youcanusetheWakeonLAN
feature.WhenyousetWakeonLANtoEnabled,thecomputerwillturnonwhenitreceivesaspecic
signalfromanothercomputeronthelocalareanetwork(LAN).
ToenabletheWakeonLANfunctionortheWakeUponAlarmfunctionontheWindows8operatingsystem,
dothefollowing:
1.OpenControlPanel.
2.ClickHardwareandSound➙PowerOptions.
3.Intheleftpanel,clickChoosewhatthepowerbuttonsdo.
4.IntheShutdownsettingsection,clearTurnonfaststartup.
Note:Ifthesettingsareunavailable,clickChangesettingsthatarecurrentlyunavailable.
5.ClickSavechanges.
102LenovoH520gHardwareMaintenanceManual
- LenovoH520g 1
- HardwareMaintenanceManual 1
- FirstEdition(January2013) 2
- Contents 3
- Chapter10.FRUlists.........95 4
- Chapter11.Additionalservice 4
- AppendixA.Notices.........103 4
- Index.................105 4
- Chapter1.Aboutthismanual 5
- Chapter2.Safetyinformation 7
- Voltage-selectionswitch 9
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter2.Safetyinformation7 11
- .Safetyinformation9 13
- Chapter2.Safetyinformation11 15
- .Safetyinformation13 17
- .Safetyinformation15 19
- Chapter2.Safetyinformation17 21
- ≥18kg≥32kg≥55kg 23
- .Safetyinformation21 25
- Chapter2.Safetyinformation25 29
- Chapter3.Generalinformation 33
- LenovoSupportWebsite 34
- Chapter4.Generalcheckout 35
- Basictroubleshooting 37
- Troubleshootingprocedure 38
- Troubleshooting 39
- Audioproblems 39
- NoaudioinWindows 40
- CDproblems 41
- DVDproblems 42
- Intermittentproblems 43
- Harddiskdriveproblems 43
- Monitorproblems 46
- Networkingproblems 47
- AwirelessLANproblem 49
- AwirelessWANproblem 49
- Optionproblems 50
- Performanceandlockupproblems 51
- Printerproblems 53
- Serialportproblems 53
- Softwareproblems 54
- USBproblems 55
- Diagnostics 55
- LenovoSolutionCenter 55
- Viewingandchangingsettings 57
- Usingpasswords 57
- Passwordconsiderations 58
- Power-OnPassword 58
- AdministratorPassword 58
- HardDiskPassword 58
- Enablingordisablingadevice 59
- Selectingastartupdevice 59
- EnablingErPcompliancemode 60
- ExitingtheSetupUtilityprogram 61
- Chapter7.Symptom-to-FRUindex 63
- POSTerrorcodes 64
- .Symptom-to-FRUindex61 65
- Miscellaneouserrormessages 66
- Undeterminedproblems 67
- Chapter8.Locations 69
- LocatingmajorFRUsandCRUs 70
- Locatingpartsonthesystemboard 72
- Locatinginternaldrives 73
- Chapter9.ReplacingFRUs 75
- Removingthecomputercover 76
- Attention: 77
- Figure7.Removingthefrontbezel 77
- InstallingorreplacingaPCIcard 78
- .ReplacingFRUs75 79
- Figure10.RemovingaPCIcard 80
- Replacingthebattery 81
- Chapter9.ReplacingFRUs79 83
- Replacingtheopticaldrive 84
- .ReplacingFRUs81 85
- Chapter9.ReplacingFRUs83 87
- Replacingthemicroprocessor 89
- 2onthemicroprocessor 91
- Chapter9.ReplacingFRUs87 91
- Replacingthesystemboard 92
- Chapter9.ReplacingFRUs89 93
- Chapter9.ReplacingFRUs91 95
- Completingthepartsreplacement 97
- Chapter10.FRUlists 99
- .FRUlists97 101
- ©CopyrightLenovo2013 103
- Powermanagement 106
- AutomaticPower-onfeatures 106
- AppendixA.Notices 107
- EuropeanconformanceCEmark 108
- Trademarks 108
- Televisionoutputnotice 108
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