Lenovo ThinkCentre E73 - Updating (Flashing) the BIOS from Your Operating System; Recovering from a POST and 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.ClickDownload&Drivers.
b.Intheleftpane,clickDownloadsanddrivers.
c.FromtheBranddrop-downlistbox,selectDesktops.
d.FromtheFamilydrop-downlistbox,selectthefamilyname.
e.ClickContinue.
f.FromtheReneresultsdrop-downlistbox,selectBIOS.
g.ClicktheBIOSupdatelink.
3.ClicktheTXTlethatcontainstheinstructionsforupdating(ashing)theBIOSfromyouroperating
system.
4.Printtheseinstructions.Thisisveryimportantbecausetheseinstructionswillnotbedisplayedon
thescreenafterthedownloadbegins.
5.Followtheprintedinstructionstodownload,extract,andinstalltheupdate.
RecoveringfromaPOSTandBIOSupdatefailure
IfthepowertoyourcomputerisinterruptedwhilethePOSTandBIOSisbeingupdated,yourcomputer
mightnotrestartcorrectly.Ifthishappens,performthefollowingproceduretorecoverfromthePOSTand
BIOSupdatefailure.ThisprocedureiscommonlycalledBoot-blockRecovery.
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removethecomputercover.Formachinetypes1577,1579,and1607,see“Removingthecomputer
cover”onpage82.Formachinetypes1578,1583,and1652,see“Removingthecomputercover”on
page126
.
3.LocatetheClearCMOS/Recoveryjumperonthesystemboard.See“Locatingpartsonthesystem
board”onpage72.
4.RemoveanypartsanddisconnectanycablesthatmightpreventyouraccesstotheClearCMOS
/Recoveryjumper.
5.Movethejumperfromthestandardposition(pin1andpin2)tothemaintenanceposition(pin2and
pin3).
6.Reinstallanypartsandreconnectanycablesthathavebeenremovedordisconnected.
7.Reinstallthecomputercoverandreconnectthepowercordsforthecomputerandmonitor.Formachine
types1577,1579,and1607,see“Completingthepartsreplacement”onpage122
.Formachinetypes
1578,1583,and1652,see“Completingthepartsreplacement”onpage174.
8.TurnonthecomputerandtheninsertthePOSTandBIOSupdate(ashupdate)discintotheoptical
drive.Waitafewminutes.Then,therecoverysessionbegins.Therecoverysessionwilltaketwoto
threeminutes.Duringthistime,awarningmessagewillbedisplayedandnoactionisneededfromyou.
9.Aftertherecoverysessioniscompleted,therewillbenovideo,andyourcomputerwillautomatically
turnoff.
10.Repeatstep1throughstep4.
11.Movethejumperbacktothestandardposition(pin1andpin2).
12.Reinstallanypartsandreconnectanycablesthathavebeenremovedordisconnected.
Chapter11.Additionalserviceinformation179