Manual

Computerscreenproblems
•Problem:MyscreenkeepsblankingwhenIdonotwantitto.
Solution:
–IfyourcomputerispreinstalledwiththeWindows7operatingsystem,youcandisableanysystem
timers,suchastheLCDturn-offtimerortheblanktimerbydoingthefollowing:
1.StartPowerManager.
2.ClickthePowerplantab,andthenselectMaximumPerformancefromthepredefinedpower
plans.
–IfyourcomputerispreinstalledwiththeWindows10operatingsystem,dothefollowing:
1.GotoControlPanel,andensurethatyouviewControlPanelbyCategory.
2.ClickHardwareandSound➙PowerOptions➙Highperformance.
3.Showtheadditionalplans,andthenchooseHighperformance.
•Problem:WhenIturnonthecomputer,nothingisdisplayedonthescreenandthecomputerdoesnot
beepwhilestartingup.
Note:Ifyouarenotsurewhetheryouheardanybeeps,turnoffthecomputerbypressingandholdingthe
powerbuttonforfoursecondsormore.Thenturnonthecomputerandlistenagain.
Solution:Makesurethat:
–Theacpoweradapterisconnectedtothecomputerandthepowercordispluggedintoaworking
electricaloutlet.
–Thecomputeristurnedon.(Pressthepowerbuttonagainforconfirmation.)
–Thebrightnesslevelofthescreenisappropriatelyset.
Ifapower-onpasswordisset,pressanykeytodisplaythepromptforthepower-onpasswordand
thentypethecorrectpasswordandpressEnter.
Iftheseitemsarecorrectlyset,andthescreenremainsblank,havethecomputerserviced.
•Problem:WhenIturnonthecomputer,onlyawhitecursorisdisplayedonablankscreen.
Solution:Ifyouhavemodifiedapartitiononyourharddiskdrivebyusingpartitionsoftware,information
aboutthatpartition,orthemasterbootrecordmighthavebeendestroyed.
Dothefollowingtotrytosolvetheproblem:
1.Turnoffthecomputer,andthenturnitonagain.
2.Ifyoustillseeonlythecursoronthescreen,dothefollowing:
–Ifyouhaveusedpartitionsoftware,examinethepartitionontheharddiskdrivebyusingthe
software,andrecoverthepartitionifrequired.
–Usetherecoverysolutionstorestorethesystemtothefactorydefaultstate.
Iftheproblempersists,havethecomputerserviced.
•Problem:Thescreengoesblankwhilethecomputerison.
Solution:Yourscreensaverorpowermanagementmighthavebeenenabled.Dooneofthefollowing:
–TouchtheTrackPointpointingdeviceorthetrackpad,orpressakeytoexitthescreensaver.
–Pressthepowerbuttontoresumethecomputerfromsleeporhibernationmode.
•Problem:Thescreenisblank.
98ThinkPadP70UserGuide