Lenovo ThinkPad Edge E425 - Page 135

•Message:0251:SystemCMOSchecksumbad.
Solution:ThesystemCMOSmighthavebeencorruptedbyanapplicationprogram.Thecomputeruses
thedefaultsettings.RunThinkPadSetuptorecongurethesettings.Ifyoustillseethesameerrorcode,
havethecomputerserviced.
•Message:0260:Systemtimererror.
Solution:Havethecomputerserviced.
•Message:0270:Realtimeclockerror.
Solution:Havethecomputerserviced.
•Message:0271:Dateandtimeerror.
Solution:Neitherthedatenorthetimeissetinthecomputer.Setthedateandtime,usingThinkPad
Setup.
•Message:0280:Previousbootincomplete.
Solution:Yourcomputerwasunabletocompletethebootprocess.
Turnthecomputeroff;thenturnitontostartThinkPadSetup.Verifythecongurationandthenrestartthe
computereitherbychoosingtheExitSavingChangesoptionundertheRestartitemorbypressingF10.
Ifyoustillseethesameerrorcode,havethecomputerserviced.
•Message:02D0:Systemcacheerror.
Solution:Thecacheisdisabled.Havethecomputerserviced.
•Message:02F4:EISACMOSnotwritable.
Solution:Havethecomputerserviced.
•Message:02F5:DMAtestfailed.
Solution:Havethecomputerserviced.
•Message:02F6:SoftwareNMIfailed.
Solution:Havethecomputerserviced.
•Message:02F7:Fail-safetimerNMIfailed
Solution:Havethecomputerserviced.
•Message:1802:Unauthorizednetworkcardispluggedin-Poweroffandremovethenetworkcard.
Solution:TheminiPCIExpressnetworkcardisnotsupportedonthiscomputer.Removeit.
•Message:1803:Unauthorizeddaughtercardispluggedin-Poweroffandremovethedaughtercard.
Solution:Thedaughtercardisnotsupportedonthiscomputer.Removeit.
•Message:1805:UnauthorizedWirelessUSBcardispluggedin-PoweroffandremovetheWireless
USBcard.
Solution:TheWirelessUSBcardisnotsupportedonthiscomputer.Removeit.
•Message:2100:InitializationerroronHDD0(MainHDD).
Solution:Theharddiskdriveisnotworking.Havetheharddiskdriveserviced.
Chapter9.Troubleshootingcomputerproblems117