win7开机后黑屏，很久才进入桌面
下面是启动时间信息:
- System
- Provider
[ Name] Microsoft-Windows-Diagnostics-Performance
[ Guid] {CFC18EC0-96B1-4EBA-961B-622CAEE05B0A}
EventID 100
Version 2
Level 1
Task 4002
Opcode 34
Keywords 0x8000000000010000
- TimeCreated
[ SystemTime] 2017-12-27T09:28:23.219606200Z
EventRecordID 727
- Correlation
[ ActivityID] {04705C50-F800-0002-23DE-0D65F47ED301}
- Execution
[ ProcessID] 1560
[ ThreadID] 1964
Channel Microsoft-Windows-Diagnostics-Performance/Operational
Computer xTree-PC
- Security
[ UserID] S-1-5-19
- EventData
BootTsVersion 2
BootStartTime 2017-12-27T09:23:45.640400200Z
BootEndTime 2017-12-27T09:28:19.816411500Z
SystemBootInstance 399
UserBootInstance 378
BootTime 269443
MainPathBootTime 195317
BootKernelInitTime 17
BootDriverInitTime 3141
BootDevicesInitTime 1608
BootPrefetchInitTime 36705
BootPrefetchBytes 421130240
BootAutoChkTime 0
BootSmssInitTime 5540
BootCriticalServicesInitTime 305
BootUserProfileProcessingTime 162765
BootMachineProfileProcessingTime 178
BootExplorerInitTime 16760
BootNumStartupApps 7
BootPostBootTime 74126
BootIsRebootAfterInstall false
BootRootCauseStepImprovementBits 64
BootRootCauseGradualImprovementBits 0
BootRootCauseStepDegradationBits 0
BootRootCauseGradualDegradationBits 0
BootIsDegradation false
BootIsStepDegradation false
BootIsGradualDegradation false
BootImprovementDelta 0
BootDegradationDelta 0
BootIsRootCauseIdentified true
OSLoaderDuration 2177
BootPNPInitStartTimeMS 17
BootPNPInitDuration 1628
OtherKernelInitDuration 1193
SystemPNPInitStartTimeMS 2819
SystemPNPInitDuration 3121
SessionInitStartTimeMS 5943
Session0InitDuration 2074
Session1InitDuration 166
SessionInitOtherDuration 3299
WinLogonStartTimeMS 11483
OtherLogonInitActivityDuration 4129
UserLogonWaitDuration 4733
点击“开始”—“运行”（或者直接用WIN+R也可以），接着输入“msconfig”敲回车。在系统配置实用程序的窗口中选择“启动”的页面。
同样，在这里列出了很多开机时候自动启动的程序，你可以把它们前面的小勾取消就可以了，点确定。
也可以使用电脑管家清理启动项，点击“启动项”禁用不必要的启动项即可。
接着选择 在安全模式启动Windows
进去后按开始～～运行～～cmd～～netsh winsock reset catalog～～重启OK
电脑开机后显示器黑屏怎么办