Solution:Turnoffthecomputerbypressingandholdingthepowerbuttonfor4secondsormore.Ifthe
systemisstillnotreset,removetheacpoweradapterandthebattery.
Bootproblems
Printtheseinstructionsnowandkeepthemwithyourcomputerforreferencelater.
Ifyoureceiveanerrormessagebeforetheoperatingsystemloads,followtheappropriatecorrectiveactions
forPOSTerrormessages.
Ifyoureceiveanerrormessagewhiletheoperatingsystemisloadingthedesktopcongurationafterthe
POSTiscompleted,checkthefollowingitems:
1.GototheLenovoSupportWebsiteathttp://www.lenovo.com/supportandsearchfortheerrormessage.
2.GototheMicrosoftKnowledgeBasehomepageathttp://support.microsoft.com/andsearchforthe
errormessage.
Sleepandhibernationproblems
Problem:Thecomputerenterssleepmodeunexpectedly.
Solution:Ifthemicr oprocessoroverheats,thecomputerautomaticallyenterssleepmodetoallowthe
computertocoolandtoprotectthemicroprocessorandotherinternalcomponents.Checkthesettings
forsleepmode.
Problem:Thecomputerenterssleepmode(thesleepindicatorturnson)immediatelyafterthepower-on
self-test.
Solution:Makesurethat:
Thebatteryischarged.
Theoperatingtemperatureiswithintheacceptablerange.Referto“Operatingenvironment”onpage
15.
Ifthebatteryischargedandthetemperatureiswithinr ange,havethecomputerserviced.
Problem:Acriticallow-batteryerroroccurs,andthecomputerimmediatelyturnsoff.
Solution:Thebatterypowerisgettinglow.Connecttheacpoweradaptert othecomputerandplugit
intoanelectricaloutlet,orreplacethebatterywithachargedone.
Problem:ThecomputerdisplayremainsblankafteryoupressFntoreturnfromsleepmode.
Solution:Checkwhetheranexternalmonitorwasdisconnectedorturnedoffwhilethecomputerwas
insleepmode.Ifyoudisconnectedorturnedofftheexternalmonitor,connectitorturnitonbefore
resumingthecomputerfromthesleepmode.Whenresumingthecomputerfromthesleepmode
withoutattachingtheexternalmonitororturningiton,andthecomputerdisplayremainsblank,press
F7tobringupthecomputerdisplay .
Problem:Thecomputerdoesnotreturnfromsleepmode,orthesystemstatusindicator(illuminated
ThinkPadlogo)blinksslowlyandthecomputerdoesnotwork.
Solution:Ifthesystemdoesnotreturnfromsleepmode,itmighthaveenteredsleeporhibernation
modeautomaticallybecausethebatteryisdepleted.Checkthesystemstatusindicator(illuminated
ThinkPadlogo).
Ifthesystemstatusindicator(illuminatedThinkPadlogo)blinksslowly,yourcomputerisinsleepmode.
Connecttheacpoweradaptertothecomputer;thenpressFn.
Ifthesystemstatusindicator(illuminatedThinkPadlogo)isoff,yourcomputerisinpower-offstateor
inhibernationmode.Connecttheacpoweradaptertothecomputer;thenpressthepowerbutton
toresumeoperation.
140UserGuide