Lenovo computer hardware 9421 Manual

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Lenovo computer hardware 9421
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480
Updating(ashing)BIOSfromadiskette
1.Insertasystemprogramupdate(ash)disketteintothediskettedrive.systemprogramupdatesare
availableathttp://www.lenovo.com/supportontheWorldWideWeb.
2.Turnonthecomputer.Ifitisalreadyon,youmustturnitoffandbackon.Theupdatebegins.
3.Followtheinstructionsonthescreentocompletetheupdate.
RecoveringfromaPOST/BIOSupdatefailure
IfthepowertoyourcomputerisinterruptedwhilePOST/BIOSisbeingupdated(ashupdate),yourcomputer
mightnotrestartcorrectly.Ifthishappens,performthefollowingprocedurewhichiscommonlycalled
Boot-blockRecovery.
1.Turnoffthecomputerandanyattacheddevices,suchasprinters,monitors,andexternaldrives.
2.Unplugallpowercordsfromelectricaloutletsandremovethecomputercover.Referto"Removing
thecover"onpage68.
3.Accessthesystemboard.Referto"Locatingpartsonthesystemboard"onpage71.
4.LocatetheClearCMOS/Recoveryjumperonthesystemboard.Referto"Locatingpartsonthesystem
board"onpage71.
5.RemoveanycablesthatimpedeaccesstotheClearCMOS/Recoveryjumper.
6.Movethejumperfromthestandardposition(pin1andpin2)topin2andpin3.
7.Reconnectanycablesthatweredisconnected.Referto"CompletingtheFRUreplacement"onpage91.
8.Closethecomputercoverandreconnectthepowercordsforthecomputerandmonitortoelectrical
outlets.
9.InsertthePOST/BIOSupdate(ash)oppydisketteorCD-ROMintothedrive,andturnonthecomputer
andthemonitor.
10.Therecoverysessionwilltaketwotothreeminutes.Duringthistimeyouwillhearaseriesofbeeps.After
theupdatesessioniscompleted,therewillbenovideo,theseriesofbeepswillend,andthesystemwill
automaticallyturnoff.Removethediskettefromthediskettedriveordiscfromtheopticaldrive.
11.Repeatsteps2through5onpage468.
12.ReplacetheClearCMOS/Recoveryjumpertothestandardposition(pin1andpin2).
13.Reconnectanycablesthatweredisconnected.Referto"CompletingtheFRUreplacement"onpage91.
14.Closethecomputercoverandreconnectthepowercordsforthecomputerandmonitortoelectrical
outlets.
15.Turnonthecomputertorestarttheoperatingsystem.
Powermanagement
Powermanagementreducesthepowerconsumptionofcertaincomponentsofthecomputersuchasthe
systempowersupply,processor,harddiskdrives,andsomemonitors.
Automaticcongurationandpowerinterface(ACPI)BIOS
BeinganACPIBIOSsystem,theoperatingsystemisallowedtocontrolthepowermanagementfeatures
ofthecomputerandthesettingforAdvancedPowerManagement(APM)BIOSmodeisignored.Not
alloperatingsystemssupportACPIBIOSmode.
AutomaticPower-Onfeatures
TheAutomaticPower-OnfeatureswithinthePowerManagementmenuallowyoutoenableanddisable
featuresthatturnonthecomputerautomatically.
468ThinkCentreHardwareMaintenanceManual
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