解决电脑开机不能启动的问题So

第第页解决电脑开机不能启动的问题（So...解决电脑开机不能启动的问题（Solvetheproblemthatthecomputerbootcannotbestarted）

Thecomputercannotbeswitchedonforthefirsttime.Afterthepoweriscutoff,thepowerisswitchedonagain:

1.,thepowersupplysystemfailureledtoblackscreenfaultphenomenon:aftertheboot,themainpanelindicatorlightisnotheard,themainpowersupplyfanrotationsoundandharddisklf-testsound,thewholesystemissilent.Thisisthephenomenonthattheequipmentinthehostdoesnotreceivenormalpowersupply.Inspectionandtreatmentmethods:thepowersupplysystemfailurecanbecaudbyACpowersupplycircuitbreaking,ACpowersupplyvoltageabnormal,microcomputerpowerfailureorshort-circuitinhost.Powersystemfailureisnotcaudbydamagetothehostpowersupply,whentheACpowersupplyvoltage(abnormaloverpressureorunderpressure),thehostpowersupplymachineno-loadandshortcircuitprotectioncircuit,thehostpowersupplyinsidethestart,automaticallycutoffthepoweroutputtoprotectthehostequipment.

奥斯卡最佳影片(1)whenthepowersupplysystemfails,firstcheckwhethertheACpowersupplyisconnectedtothehost.

(2)confirmtheACpowersupplyconnectedtotheconsole,theearclototheswitchingpowersupply,

ashorttimeswitchonelectricityandlisten,ifyouhearthepowerofinternalissue""Thenoiindicatesthatthepowersupplyisinthestateoflf-protection.ThereasonisthattheACpowersupplyisnotnormalorthereisashortcircuitinthe

fighting什么意思machine,whichleadstothestartoftheprotectivecircuitinsidethepowersupply.Pleaaccordingtothefollowingsteps:first,checkprocessingbyACsupplyvoltagemultimeterACvoltage250Vfilecheckhostpowerplug,iftheACvoltageismorethan240Vorlessthan150V,overpressureandundervoltageprotectioncircuitwillstartthehostpowersupply,powersupplyequipmenttostopthemachine,pleauthepowersupplyorUPSpowersupplyforthehostpowersupply.

IftheACpowersupplyvoltageisnormal,onebyonetopullwithinthehostinterfacecardandotherequipmentinpowerlineandsignalline,andthenpowertestmachine,suchastheremovalofahostpowerrecoverydevice,itisjusttheremovalofequipmentdamageduetoimproperinstallationorshortcircuit,theshort-circuitprotectioncircuitinthepowersupplytothepowersupplystartstopmachineequipment.Ifthepowerlineofalltheequipmentisremoved,thepowersupplyisstillinthestateofnooutput,indicatingthatthepowerfailure,pleamaintainthepowersupply.Description:thepowersupplyshouldbeconnectedwithatleastoneload(suchasCD-ROMorharddisk),suchasno-loadconnection,microcomputerpowersupply,microcomputerpowersupply,noloadprotectio

leafletncircuitwillstart,stopoutput.

(3)ifthemainpowersupplyisnotworking,pleacheckthemainpowerswitchonthefrontpanelofthemainchassis.Ifthepowerswitchisingoodcondition,itisusuallyapowerfailure.

2.,nolf-test,blackscreen,faultphenomenon:aftertheboot,themainpanellightisbright,thefaninsidethemachine

rotatesnormally,butthemonitordoesn'tshow.Atthestartofthethreelightupperrightcornerofthekeyboarddoesnotflash,nottohearthelfmemoryfrom"Da"SoundandPChornalarmsound.Checkprocessingmethod:fromthefaultphenomenoncanbeen,themainpowersupplyisbasicallynormal(donotruleoutthehostpowerfailure),butfailedtostarttheBIOSlf-testprocedures,thecrashoccurred.Youshouldcheckthemonitor,displaycard,memory,CPUandmainswitch.Becauthereisnolfcheckingblackscreenfault,thereisnohintinformation,anditcanonlybecheckedbytheminimumsystemmethod."Minimumsystemapproach"meansthatonlybasicdevicessuchasmotherboards,memorycards,CPU,displaycards,monitorsandpowersuppliesarererved,

Firstchecktheminimumsystemofthebasicequipment,checktheminimumsystemtoconfirmth

atafterthenormalwork,andthenfurthercheckotherequipment.Whenusingtheminimumsystemmethod,beforeopeningthechassistoremoveotherdevices,itisrecommendedtoreplacethemonitortoeifitworksproperly.Ifonlytheminimumsystemisretained,thecomputerwillnotworkproperlyafterpoweron.Thememory,displaycardandCPUwillbecheckedbythereplacementmethodinturn.Afterconfirmingthatthemonitor,memory,displaycardandCPUcanwork,thesourceofthefaultisonlythemotherboardandthepowersupply.Theeasiestwaytodistinguishbetweenthemainboardfaultandthepowerfailureistochangethepowersupply.

3.failuresofblackfailurefaultphenomenon:bootthehostpanelindicatorlight,machinefaninthenormalrotation,rotationofthediskcanhearthesound,lfmemory"issued

by"SoundandPChornalarmsound.Whenyouethestart,thethreelightsontheupperrightcornerofthekeyboardareflashing,butthemonitorisnotdisplayed.Checkprocessingmethods:thefaultphenomenonindicatesthatthehostpowersupplyisbasicallynormal,mostofthecircuitboardwithoutfault,andthememorybefore64KBcanreadandwriteproperly,BIOSfaultdiagnosisprogramisrunning,andcanndalarmsignalsthroughPChorn.Thisfaultmainlyfromthedisplay,displaycards,memory,motherboardsandpowersupplyhardwareproblemscaudby.Mostofthiskindoffaultcanbejudgedbyhornwarningsound.SincedifferentversionsofBIOShavmenstrualcup

edifferentencodingmethodsforaudiosignals,theMSIBIOS5158(AWARD)isudasanexampletointroduceitscheckingandprocessingmethods.

(1)ifyouhear"toottoot"..."Forashortsound,thatthemachinehasaslightshort-circuitphenomenon,pleaimmediatelyshutdown,openthebox,onebyonetopullwithinthehostinterfacecardandotherequipmentinthepowerlineandsignallinepowertestmachine,suchastheremovalofadevicewhenthesystemreturnstonormal,itisjusttheremovalofshort-circuitfaultcaudbyimproperinstallationorequipmentdamage.Ifyouonlyconnectthemainboard,thepowercordandthetester,whatyoustillhearis"toottoot"..."Continuousshorttone,

Therearethreereasonsforthetrouble:

phenomenaThemainboardandthechassisareshortcircuited,itisadvisabletocheckthemotherboard;

Second,thepoweroverloadcapacityispoor,changethepowersupplytotry;knockingonheavensdoor

Ifthemainboardisshortcircuited,plearepairthemainboard.Warning:pluganddraindevice.Turnoffthepower.Liveplugwilldamagethedevice.

(2)ifthehearingisinterruptedlongsound(somemachinesdiscontinuoustimelonger)thatis,memo

excellencyextended是什么意思ryerrordetection,usingtheATXpowerurswiththechassispanelpowerswitchusuallycannotbeshutdown,onlydirectlyunplugthepowerline.Unplugthememory,utheerarforthememoryofthe"goldenfinger"cleaning,retainingonlya168linememoryoratof72linememory(inthe586motherboardinstalled72linememory2roota