1.GototheLenovoSupportWebsiteat:http://www.lenovo.com/supportandsearchfortheerror
message.
2.VisittheMicrosoftKnowledgeBasehomepageat:http://support.microsoft.com/andsearchforthe
errormessage.
Sleep(standby)andhibernationproblems
•Problem:Thecomputerenterssleep(standby)modeunexpectedly.
Solution:Iftheprocessoroverheats,thecomputerautomaticallyentersleep(standby)modetoallow
thecomputertocoolandtoprotecttheprocessorandotherinternalcomponents.Checkthesettings
forsleep(standby)mode,usingPowerManager.
•Problem:Thecomputerenterssleep(standby)mode(thesleep/standbyindicatorturnson)immediately
afterPower-onself-test.
Solution:Makesurethat:
–Thebatteryischarged.
–Theoperatingtemperatureiswithintheacceptablerange.Referto“Features”onpage16,
“Specications”onpage17,and“Operatingenvir onment”onpage18.
Ifthebatteryischargedandthetemperatureiswithinrange,havethecomputerserviced.
•Problem:The“criticallow-batteryerror”messageappears,andthecomputerimmediatelyturnsoff.
Solution:Thebatterypowerisgettinglow.Connecttheacpoweradaptertothecomputerandplugit
intoanelectricaloutlet,orreplacethebatterywithachargedone.
•Problem:ThecomputerdisplayremainsblankafteryoupressFntoreturnfromsleep(standby)mode.
Solution:Checkwhetheranexternalmonitorwasdisconnectedorturnedoffwhilethecomputerwas
insleep(standby)mode.Ifyoudisconnectedorturnedofftheexternalmonitor,connectitorturniton
beforeresumingthecomputerfromthesleep(standby)mode.Whenresumingthecomputerfromthe
sleep(standby)modewithoutattachingthee xternalmonitororturningiton,andthecomputerdisplay
remainsblank,pressFn+F7tobringupthecomputerdisplay.
Notes:
–IfyouareusingFn+F7toapplyapresentationscheme,youwillneedtopressFn+F7atleastthree
timesinthreesecondstobringupthecomputerdisplay.
–IfyourcomputerisaWindows7model,itdoesnotsupportthepresentationscheme.
•Problem:Thecomputerdoesnotreturnfromsleep(standby)mode,orthesleep(standby)indicatorstays
onandthecomputerdoesnotwork.
Solution:Ifthesystemdoesnotreturnfromsleep(standby)mode,itmayhaveenteredsleep(standby)or
hibernationmodeautomaticallybecausethebatteryisdepleted.Checkthesleep(standby)indicator.
–Ifthesleep(standby)indicatorison,yourcomputerisinsleep(standby)mode.Connecttheac
poweradaptertothecomputer;thenpressFn.
–Ifthesleep(standby)indicatorisoff,yourcomputerisinhibernationmodeorpower-offstate.Connect
theacpoweradaptertothecomputer;thenpr essthepowerbuttontoresumeoperation.
Ifthesystemstilldoesnotreturnfromsleep(standby)mode,yoursystemmaystoprespondingandyou
maynotbeabletoturnoffthecomputer.Inthiscase,youneedtoresetthecomputer.Ifyouhavenot
savedyourdata,itmaybelost.Toresetthecomputer ,pressandholdthepowerbuttonfor4secondsor
more.Ifthesystemisstillnotreset,removetheacpoweradapterandthebattery.
•Problem:Yourcomputerdoesnotentersleep(standby)orhibernationmode.
228UserGuide