This morning, I used the computer's bluetooth to connect the speaker to play music, but suddenly there was no sound, and re-opening the bluetooth didn't help. Then I restarted, connected the stereo again, and still suddenly no sound. When I went to turn off bluetooth, bluetooth disappeared. I went to check the device manager and found an unknown USB device, which is the bluetooth device. I uninstalled the driver and reinstalled and it still didn't solve the problem. Later, I went to clear the static electricity of the computer, and when I turned it on, I found that the bluetooth can be used. The bluetooth is displayed in the device manager, and the location USB device is gone. Then I continue to connect the stereo to play music. As a result, after a period of time, the same problem occurred again, the Bluetooth function disappeared, and the location USB device appeared. So I judged that the problem was not caused by static electricity. What is going on?今天早上我用电脑蓝牙连接音响放歌，突然没有声音，重开蓝牙也没用。然后我重启，再次连接音响，仍然突然没有声音。当我去关蓝牙的时候，蓝牙就消失了。我去检测设备管理器，发现了未知USB设备，这就是蓝牙设备。我卸载驱动重新安装依旧无法解决问题。后来我去清除电脑静电，开机发现蓝牙能用了，设备管理器中显示了蓝牙，位置USB设备没有了。然后我继续连接音响放歌。结果用了一段时间，又出现同样的问题了，蓝牙功能消失，出现了位置USB设备。所以我判断并不是静电导致的问题。 请问是怎么回事？
HIBL.I'mGreg,10yearsawardedWindowsMVP,heretohelpyou.HerearethefixesthatworkmostforBluetooth.Evenifyou'vetriedasteppleasetryitagaininthissequence:1)SeeifyoucanSystemRestoretoapointbeforetheproblemstarted:https://www.windowscentral.com/how-use-system-r.SystemRestoreisyourfirstlineofdefenseandcantakeyoubacktoapointbeforeaproblembegan.Ifitdoesn'thelpthenyoucanundoit.Readaboutitfirstinthetutorialaboveandthentryrestoringtojustbeforethisstarted.IfSystemRestoreisnotenabledonCdrivedothatnowsoit'savailableinthefuture.IftheproblemrepeatsorSystemRestoredoesn'tworkthencheckwhichWindowsUpdateswereinstalledatSettings>Update&Security>WindowsUpdates>UpdateHistory,uninstallthemthereorSystemRestoreagain,thenimmediatelycheckforandblocktheUpdateswiththeHideUpdatestoolexplainedhere:https://www.tenforums.com/tutorials/8280-hide-s.inDeviceManagerreachedbyrightclickingtheStartbutton.2)TryUpdatingtheBluetoothdriverfromthePCmaker'sSupportDownloadswebpageforyourexactmodel.Installitevenifit'sthesameornewerthantheoneinDeviceManagerreachedbyrightclickingtheStartbutton.Whiletherecheckthatyoualsohavethelatestchipset,BIOS,display,network,USBandallotherdrivers,comparedtotheonespresentlyinstalle3)RightclickStartbuttontoaccessDeviceManager,locateBluetoothdevice(ifnecessaryfromViewtabShowHiddenDevices),onDrivertabseeifRollBackisavailable,ifnottryUpdateDriver,firstautomatically,thenBrowse,thenLetMePicktotryallpreviouslyinstalledDrivers.IfthesefailUninstalltheDriver,restartPCtoreinstall.IftheBTdriverisnotthere,accesstheViewtabinDeviceManagerto"ShowHiddenDevices."4)Makesureyou'repairingcorrectlyasshownhere:https://support.microsoft.com/en-us/help/15290/.5)TryFixesherewhichareallworking:https://support.microsoft.com/en-us/windows/fix.https://thegeekpage.com/bluetooth-not-working-o.https://windowsreport.com/bluetooth-not-working.(Avoidadlinkswhichintrudeintoeditorialcopy,especiallyavoidRestoroandReimageads)https://www.howtogeek.com/508895/how-to-trouble.https://www.lifewire.com/fix-windows-10-bluetoo.https://net2.com/how-to-fix-bluetooth-problems-.https://www.onmsft.com/how-to/how-to-fix-blueto.https://superuser.com/questions/1017867/make-wi.https://www.makeuseof.com/tag/bluetooth-not-wor.TrytheseadditionalfixesforBluetoothadapterdisappearsafterWindows10Update:https://howtofixwindows.com/bluetooth-disappear.https://www.guidingtech.com/fix-bluetooth-missi.https://windowsreport.com/bluetooth-disappeared.(Avoidadlinks!)https://answers.microsoft.com/en-us/windows/for.6)TrytheBluetoothtroubleshooteratSettings>Update&Security>Troubleshoot.7)TryturningoffFastStartupatSettings>System>Power&Sleep>AdditionalPowerSettings>ChoosewhatPowerbuttonsdo>Changesettingsthatareunavailable>uncheckFastStartup.8)IfthiswascausedbyaVersionUpdatethenfor10daysyoucanrollitbackinSettings>Update&Security>RecoveryandthenhideituntilitmaturesusingtheHideUpdatesToolwhichisexplainedmorehere:https://www.tenforums.com/tutorials/8280-hide-s.Ifthatdoesn'tworkyoucanalsoGoBackinRepairModeasshownhere:https://www.tenforums.com/tutorials/2294-advanc.YoucanalsolettheUpdatesinstallagainastheymaynotcausethesameproblem,theniftheydouseoneoftheabovemethodstoremoveandblockthem.9)IfyouthinktheBTadapterhasfailed,youcanreplaceiteasilywithaUSBnanoadapterlikethisone:https://www.amazon.com/ZEXMTE-Bluetooth-Receive.?10)Gooverthischecklisttomakesuretheinstallissetupcorrectly,optimizedforbestperformance,andanyneededrepairsgetdone:http://answers.microsoft.com/en-us/windows/wiki.StartwithStep4toturnoffStartupfreeloaderswhichcanconflictandcauseissues,thenStep7tocheckforinfectionthemostthoroughway,thenstep10tocheckfordamagedSystemFiles.Thencontinuewiththeotherstepstogooveryourinstallmostthoroughly.11)IfnothingelsehelpsyoucanrunaRepairInstallbyinstallingtheMediaCreationToolandchoosingfromittoUpgradeNow.ThisreinstallsWindowsinaboutanhourwhilesavingyourfiles,appsandmostsettings,solvesmanyproblemswhilealsobringingituptothelatestversion1909whichyouneedanywayandbythemoststablemethod.http://windows.microsoft.com/en-us/windows-10/m.Ihopethishelps.Feelfreetoaskbackanyquestionsandletusknowhowitgoes.Iwillkeepworkingwithyouuntilit'sresolved.________________________________________________________StandardDisclaimer:Therearelinkstonon-Microsoftwebsites.Thepagesappeartobeprovidingaccurate,safeinformation.WatchoutforadsonthesitesthatmayadvertiseproductsfrequentlyclassifiedasaPUP(PotentiallyUnwantedProducts).Thoroughlyresearchanyproductadvertisedonthesitesbeforeyoudecidetodownloadandinstallit._________________WindowsMVP2010-2020,nowanIndependentAdvisorVolunteerModeratorMillionshelpedviamytutorialsanddirectlyinforumsIwillnotquitforthosewhoworkwithme.1人认为此有帮助·此是否有帮助？是否抱歉，这没有帮助。太棒了！感谢你的反馈。你对此的满意度如何?感谢你的反馈，它能帮助改进网站。你对此的满意度如何?感谢你的反馈。
HIBL.I'mGreg,10yearsawardedWindowsMVP,heretohelpyou.HerearethefixesthatworkmostforBluetooth.Evenifyou'vetriedasteppleasetryitagaininthissequence:1)SeeifyoucanSystemRestoretoapointbeforetheproblemstarted:https://www.windowscentral.com/how-use-system-r.SystemRestoreisyourfirstlineofdefenseandcantakeyoubacktoapointbeforeaproblembegan.Ifitdoesn'thelpthenyoucanundoit.Readaboutitfirstinthetutorialaboveandthentryrestoringtojustbeforethisstarted.IfSystemRestoreisnotenabledonCdrivedothatnowsoit'savailableinthefuture.IftheproblemrepeatsorSystemRestoredoesn'tworkthencheckwhichWindowsUpdateswereinstalledatSettings>Update&Security>WindowsUpdates>UpdateHistory,uninstallthemthereorSystemRestoreagain,thenimmediatelycheckforandblocktheUpdateswiththeHideUpdatestoolexplainedhere:https://www.tenforums.com/tutorials/8280-hide-s.inDeviceManagerreachedbyrightclickingtheStartbutton.2)TryUpdatingtheBluetoothdriverfromthePCmaker'sSupportDownloadswebpageforyourexactmodel.Installitevenifit'sthesameornewerthantheoneinDeviceManagerreachedbyrightclickingtheStartbutton.Whiletherecheckthatyoualsohavethelatestchipset,BIOS,display,network,USBandallotherdrivers,comparedtotheonespresentlyinstalle3)RightclickStartbuttontoaccessDeviceManager,locateBluetoothdevice(ifnecessaryfromViewtabShowHiddenDevices),onDrivertabseeifRollBackisavailable,ifnottryUpdateDriver,firstautomatically,thenBrowse,thenLetMePicktotryallpreviouslyinstalledDrivers.IfthesefailUninstalltheDriver,restartPCtoreinstall.IftheBTdriverisnotthere,accesstheViewtabinDeviceManagerto"ShowHiddenDevices."4)Makesureyou'repairingcorrectlyasshownhere:https://support.microsoft.com/en-us/help/15290/.5)TryFixesherewhichareallworking:https://support.microsoft.com/en-us/windows/fix.https://thegeekpage.com/bluetooth-not-working-o.https://windowsreport.com/bluetooth-not-working.(Avoidadlinkswhichintrudeintoeditorialcopy,especiallyavoidRestoroandReimageads)https://www.howtogeek.com/508895/how-to-trouble.https://www.lifewire.com/fix-windows-10-bluetoo.https://net2.com/how-to-fix-bluetooth-problems-.https://www.onmsft.com/how-to/how-to-fix-blueto.https://superuser.com/questions/1017867/make-wi.https://www.makeuseof.com/tag/bluetooth-not-wor.TrytheseadditionalfixesforBluetoothadapterdisappearsafterWindows10Update:https://howtofixwindows.com/bluetooth-disappear.https://www.guidingtech.com/fix-bluetooth-missi.https://windowsreport.com/bluetooth-disappeared.(Avoidadlinks!)https://answers.microsoft.com/en-us/windows/for.6)TrytheBluetoothtroubleshooteratSettings>Update&Security>Troubleshoot.7)TryturningoffFastStartupatSettings>System>Power&Sleep>AdditionalPowerSettings>ChoosewhatPowerbuttonsdo>Changesettingsthatareunavailable>uncheckFastStartup.8)IfthiswascausedbyaVersionUpdatethenfor10daysyoucanrollitbackinSettings>Update&Security>RecoveryandthenhideituntilitmaturesusingtheHideUpdatesToolwhichisexplainedmorehere:https://www.tenforums.com/tutorials/8280-hide-s.Ifthatdoesn'tworkyoucanalsoGoBackinRepairModeasshownhere:https://www.tenforums.com/tutorials/2294-advanc.YoucanalsolettheUpdatesinstallagainastheymaynotcausethesameproblem,theniftheydouseoneoftheabovemethodstoremoveandblockthem.9)IfyouthinktheBTadapterhasfailed,youcanreplaceiteasilywithaUSBnanoadapterlikethisone:https://www.amazon.com/ZEXMTE-Bluetooth-Receive.?10)Gooverthischecklisttomakesuretheinstallissetupcorrectly,optimizedforbestperformance,andanyneededrepairsgetdone:http://answers.microsoft.com/en-us/windows/wiki.StartwithStep4toturnoffStartupfreeloaderswhichcanconflictandcauseissues,thenStep7tocheckforinfectionthemostthoroughway,thenstep10tocheckfordamagedSystemFiles.Thencontinuewiththeotherstepstogooveryourinstallmostthoroughly.11)IfnothingelsehelpsyoucanrunaRepairInstallbyinstallingtheMediaCreationToolandchoosingfromittoUpgradeNow.ThisreinstallsWindowsinaboutanhourwhilesavingyourfiles,appsandmostsettings,solvesmanyproblemswhilealsobringingituptothelatestversion1909whichyouneedanywayandbythemoststablemethod.http://windows.microsoft.com/en-us/windows-10/m.Ihopethishelps.Feelfreetoaskbackanyquestionsandletusknowhowitgoes.Iwillkeepworkingwithyouuntilit'sresolved.________________________________________________________StandardDisclaimer:Therearelinkstonon-Microsoftwebsites.Thepagesappeartobeprovidingaccurate,safeinformation.WatchoutforadsonthesitesthatmayadvertiseproductsfrequentlyclassifiedasaPUP(PotentiallyUnwantedProducts).Thoroughlyresearchanyproductadvertisedonthesitesbeforeyoudecidetodownloadandinstallit._________________WindowsMVP2010-2020,nowanIndependentAdvisorVolunteerModeratorMillionshelpedviamytutorialsanddirectlyinforumsIwillnotquitforthosewhoworkwithme.1人认为此有帮助·此是否有帮助？是否抱歉，这没有帮助。太棒了！感谢你的反馈。你对此的满意度如何?感谢你的反馈，它能帮助改进网站。你对此的满意度如何?感谢你的反馈。
Hello,Mr.Grey.Iuninstalledawindowsupdate.Afterrestartingthecomputer,thebluetoothcanbeusednormally.Thankyouforeverymethodyouoffer.您好，Grey先生。我卸载了个更新，然后重启电脑，蓝牙就好了。感谢您提供的每一个解决方案。还搁那戴墨镜呢？我徒弟呢！我不到啊！此是否有帮助？是否抱歉，这没有帮助。太棒了！感谢你的反馈。你对此的满意度如何?感谢你的反馈，它能帮助改进网站。你对此的满意度如何?感谢你的反馈。
