Lenovo ThinkCentre M91p - Updating (Flashing) the BIOS from Your Operating System; Recovering from a POST;BIOS Update Failure

Updating(ashing)theBIOSfromyouroperatingsystem
Note:BecauseLenovomakesconstantimprovementstoitsWebsites,theWebpagecontentsaresubject
tochangewithoutnotice,includingthecontentsreferencedinthefollowingprocedure.
Toupdate(ash)theBIOSfromyouroperatingsystem,dothefollowing:
1.Gotohttp://www.lenovo.com/support.
2.Dothefollowingtolocatethedownloadablelesforyourmachinetype:
a.IntheEnteraproductnumbereld,typeyourmachinetypeandclickGo.
b.ClickDownloadsanddrivers.
c.SelectBIOSfromtheReneresultsdrop-downlistboxtoeasilylocatealltheBIOSrelatedlinks.
d.ClicktheBIOSupdatelink.
3.ClicktheTXTlethatcontainstheinstructionsforupdating(ashing)theBIOSfromyouroperating
system.
4.Printtheseinstructions.Thisisveryimportantbecausetheseinstructionswillnotbedisplayedon
thescreenafterthedownloadbegins.
5.Followtheprintedinstructionstodownload,extract,andinstalltheupdate.
RecoveringfromaPOST/BIOSupdatefailure
IfthepowertoyourcomputerisinterruptedwhilethePOSTandBIOSisbeingupdated,yourcomputer
mightnotrestartcorrectly.Ifthishappens,performthefollowingproceduretorecoverfromthePOSTand
BIOSupdatefailure.ThisprocedureiscommonlycalledBoot-blockRecovery.
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Openthecomputercover.See“Openingthecomputercover”onpage30.
3.LocatetheClearCMOS/Recoveryjumperonthesystemboard.See“Locatingpartsonthesystem
board”onpage12.
4.RemoveanycablesthatimpedeaccesstotheClearCMOS/Recoveryjumper.
5.Movethejumperfromthestandardposition(pin1andpin2)tothemaintenanceposition(pin2and
pin3).
6.ReconnectanycablesthatweredisconnectedandreinstallthePCIcardifremoved.
7.Closethecomputercoverandreconnectthepowercordsforthecomputerandmonitortoelectrical
outlets.See“Completingthepartsreplacement”onpage69.
8.TurnonthecomputerandtheninsertthePOSTandBIOSupdate(ashupdate)discintotheoptical
drive.Therecoverysessionbegins.Therecoverysessionwilltaketwotothreeminutes.Duringthis
time,youwillhearaseriesofbeeps.
9.Aftertherecoverysessioniscompleted,theseriesofbeepswillend,andthesystemwillautomatically
turnoff.Removethediscfromtheopticaldrivebeforethesystemcompletelyturnsoff.
10.Repeatstep1throughstep4.
11.MovetheClearCMOS/Recoveryjumperbacktothestandardposition(pin1andpin2).
12.ReconnectanycablesthatweredisconnectedandreinstallthePCIcardifremoved.
13.Closethecomputercoverandreconnectanycablesthatweredisconnected.
14.Turnonthecomputertorestarttheoperatingsystem.
86ThinkCentreUserGuide