Windows 10/11 Display AdapterTroubleshooting guide
Roll back the display driver to reverse screen flickering after an update
The screen flickers or displays incorrectly after Windows Update or a GPU-driver update
Checked 2026.09.05Read guide ↗
Troubleshooting articles 3 / 8
144 articles covering known issues and general troubleshooting. Search by product or symptom to narrow the list.
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Windows 11Troubleshooting guide
Bluetooth options or the on/off switch are missing in Windows 11
Bluetooth is missing from Quick Settings
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Windows 11 BluetoothTroubleshooting guide
Bluetooth devices cannot be discovered or paired in Windows 11
The device does not appear in Add device
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Windows 11 AudioTroubleshooting guide
No sound from speakers or headphones in Windows 11
Video audio or notification sounds cannot be heard
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Windows 11 MicrophoneTroubleshooting guide
Apps do not recognize the microphone or cannot hear you in Windows 11
Other meeting participants cannot hear you
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Windows 11 CameraTroubleshooting guide
Camera video is missing or access is denied in Windows 11
The camera image is black
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Windows USB / Device ManagerTroubleshooting guide
Troubleshoot a USB device stopped with Code 43
The USB device is not recognized
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Windows Device ManagerTroubleshooting guide
Fix Device Manager Code 10: "This device cannot start"
A network, audio, USB, or other device does not work
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Windows 11 ActivationTroubleshooting guide
Distinguish Windows 11 activation errors 0xC004F074 and 0xC004C003
An error appears under Activation
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Windows 11 / .NET Framework 3.5Troubleshooting guide
Enabling .NET Framework 3.5 fails with 0x800F081F
.NET Framework 3.5 cannot be enabled in Windows Features
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Windows 11 File ExplorerTroubleshooting guide
File Explorer does not respond or open in Windows 11
Opening a folder causes a freeze
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Windows 11 Default AppsTroubleshooting guide
Default apps do not change or files open in another app in Windows 11
Double-clicking a file opens an unintended app
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Windows 11 Search IndexingTroubleshooting guide
Windows 11 search cannot find files or does not update results
Existing files do not appear in Start or File Explorer search
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Windows 11 Date and TimeTroubleshooting guide
The Windows 11 clock or time zone is wrong and cannot synchronize
The clock is off by minutes or hours
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Windows 11 DisplayTroubleshooting guide
An external monitor is not detected or shows no image in Windows 11
No image appears after connecting HDMI or DisplayPort
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Windows 11 Power and SleepTroubleshooting guide
Windows 11 does not wake from sleep or immediately sleeps again
Keys or the mouse cannot wake the PC
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Microsoft EdgeTroubleshooting guide
Repair Microsoft Edge when it does not open or closes immediately
No window opens when Edge is selected
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Google ChromeTroubleshooting guide
Troubleshoot Chrome ERR_NAME_NOT_RESOLVED
The site cannot be reached
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