Hi! I have some Bluetooth issues with my Asus UX330CAK notebook PC. Yesterday I tried to connect my bluetooth headphones to my computer like I normally would but, after pressing the bluetooth icon in notification center, the bluetooth icon disappeared. I looked it up on device manager, and I didn't find bluetooth there unless I clicked "show hidden devices". Now I can't find the bluetooth in hidden devices anymore. I can't enable bluetooth in settings, there is no bluetooth on switch anymore. Also I in device manager I have one device in USB devices which has yellow warning sign and says: Unknown USB Device (Device Descriptor Request Failed), error code is 43. I have nothing connected to the USB-ports so I think this can be related for my Bluetooth issue. I have found that some people had their Bluetooth hidden from device manager and had this issue too. I have searched this particular issue on web and I have found some threads and I tried all the following things to restore my Bluetooth: I ran troubleshooting for Bluetooth, it just said that I dont have bluetooth enabled, I can try to enable it with external adapter. I ran troubleshooting for Hardware and devices and it did show the "Unknown USB Device (Device Descriptor Request Failed)" issue, but didn't fix it. Also, I tried to troubleshooters for network adapters and windows update but they didn't find any issues. I've tried SFC /scannow and DISM.exe but they didn't find any issues. I have just updated newest Windows version, and I have tried install windows again, but the issue still persists. I have tried to uninstall "Unknown USB Device (Device Descriptor Request Failed)" and also uninstall my main usb driver, but that didn't fix it. I installed correct Bluetooth and network adapters from Intel's site and I also tried to delete them from installer and install again, but that didn't fix it too. - I Installed also Intel's driver updater but that didn't solve my issue. I tried to use 3rd party dirver updaters and they didn't fix my Bluetooth and I tried to also clean my registry with CCleaner. Also I tires tried to fully drain my battery and restart my laptop but even that didn't fix my issue. Is there any other things to try or could the error be hardware related? I apologise for any grammar errors, English isn't my native language. Best regards, Elias

Andre's reply is a bit disappointing as he thanked somebody last year for providing a solution to this issue that worked for the requester and has also just worked for me: https://answers.microsoft.com/en-us/windows/forum/all/bluetooth-not-working-usb-device-descriptor/2af8f09f-ce33-47f8-a42a-1b55e8cf60fd The problem is that your system is not recognising the Bluetooth chip and thinks it is unplugged and it is seeing an unknown device that is not communicating correctly. A simplified version is as follows (I found that it was not necessary to drain the laptop battery completely): Perform a hard shut-down by holding the shift key is held down whilst selecting Windows Shut Down Ensure your computer is unplugged Hold down the power key for 93 seconds. That's 90, which is the maximum recommended elsewhere plus 3 to make sure it is over 90! Press the power key briefly to start your computer Allow it to start fully. If you open Device Manager (e.g. right click Windows Key -> Device Manager or from the Control Panel), you should now see that the Bluetooth section has reappeared and there are no Unknown USB devices in the USB section. This means that your Bluetooth is now working again. This apparently works by disconnecting the power (even residual power) from relevant chips which mean that they re-establish communications from scratch when you restart.

Hi, it worked sir thank you!...but it happened again....Is it okay to follow your steps over and over again when this happen?

I have had the same issue and while performing the hard shut down does bring back the bluetooth in the device manager, it's only temporary. As soon as my laptop sleeps or hibernates, it's back to the unknown USB Device and error Code 43 - Windows has stopped this device because it has reported problems. Do you know of a way to fix the core problem of the pc not recognizing the chip?

Hey man I had just spent an entire evening trying many other fixes, hell, I even ended up wiping my computer clean and that didn't fix it. I found your comment at 1 am with basically no hope, and it worked. Thank you so much for reposting the solution indeed. You have no idea the relief I felt after seeing that bloody bluetooth square on the menu. Have a good one and best of wishes!

Andre's reply is a bit disappointing as he thanked somebody last year for providing a solution to this issue that worked for the requester and has also just worked for me: https://answers.microsoft.com/en-us/windows/forum/all/bluetooth-not-working-usb-device-descriptor/2af8f09f-ce33-47f8-a42a-1b55e8cf60fd The problem is that your system is not recognising the Bluetooth chip and thinks it is unplugged and it is seeing an unknown device that is not communicating correctly. A simplified version is as follows (I found that it was not necessary to drain the laptop battery completely): Perform a hard shut-down by holding the shift key is held down whilst selecting Windows Shut Down Ensure your computer is unplugged Hold down the power key for 93 seconds. That's 90, which is the maximum recommended elsewhere plus 3 to make sure it is over 90! Press the power key briefly to start your computer Allow it to start fully. If you open Device Manager (e.g. right click Windows Key -> Device Manager or from the Control Panel), you should now see that the Bluetooth section has reappeared and there are no Unknown USB devices in the USB section. This means that your Bluetooth is now working again. This apparently works by disconnecting the power (even residual power) from relevant chips which mean that they re-establish communications from scratch when you restart. This thread is a lifesaver. I did in 93 seconds what Dell did not on the 2 occasions I sent my laptop in for this issue. Not sure if this is a permanent fix, but at least now I know what to do.

Bluetooth disappered from device manager with "Unknown USB Device (Device Descriptor Request Failed)" -error

Anonymous

Hi!

I have some Bluetooth issues with my Asus UX330CAK notebook PC. Yesterday I tried to connect my bluetooth headphones to my computer like I normally would but, after pressing the bluetooth icon in notification center, the bluetooth icon disappeared. I looked it up on device manager, and I didn't find bluetooth there unless I clicked "show hidden devices". Now I can't find the bluetooth in hidden devices anymore. I can't enable bluetooth in settings, there is no bluetooth on switch anymore.

Also I in device manager I have one device in USB devices which has yellow warning sign and says: Unknown USB Device (Device Descriptor Request Failed), error code is 43. I have nothing connected to the USB-ports so I think this can be related for my Bluetooth issue. I have found that some people had their Bluetooth hidden from device manager and had this issue too.

I have searched this particular issue on web and I have found some threads and I tried all the following things to restore my Bluetooth:

I ran troubleshooting for Bluetooth, it just said that I dont have bluetooth enabled, I can try to enable it with external adapter.
I ran troubleshooting for Hardware and devices and it did show the "Unknown USB Device (Device Descriptor Request Failed)" issue, but didn't fix it.
Also, I tried to troubleshooters for network adapters and windows update but they didn't find any issues.
I've tried SFC /scannow and DISM.exe but they didn't find any issues.
I have just updated newest Windows version, and I have tried install windows again, but the issue still persists.
I have tried to uninstall "Unknown USB Device (Device Descriptor Request Failed)" and also uninstall my main usb driver, but that didn't fix it.
I installed correct Bluetooth and network adapters from Intel's site and I also tried to delete them from installer and install again, but that didn't fix it too.

- I Installed also Intel's driver updater but that didn't solve my issue. I tried to use 3rd party dirver updaters and they didn't fix my Bluetooth and I tried to also clean my registry with CCleaner.

Also I tires tried to fully drain my battery and restart my laptop but even that didn't fix my issue.

Is there any other things to try or could the error be hardware related?

I apologise for any grammar errors, English isn't my native language.

Best regards,

Elias

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Answer accepted by question author

Anonymous

Andre's reply is a bit disappointing as he thanked somebody last year for providing a solution to this issue that worked for the requester and has also just worked for me:

https://answers.microsoft.com/en-us/windows/forum/all/bluetooth-not-working-usb-device-descriptor/2af8f09f-ce33-47f8-a42a-1b55e8cf60fd

The problem is that your system is not recognising the Bluetooth chip and thinks it is unplugged and it is seeing an unknown device that is not communicating correctly.

A simplified version is as follows (I found that it was not necessary to drain the laptop battery completely):

Perform a hard shut-down by holding the shift key is held down whilst selecting Windows Shut Down
Ensure your computer is unplugged
Hold down the power key for 93 seconds. That's 90, which is the maximum recommended elsewhere plus 3 to make sure it is over 90!
Press the power key briefly to start your computer
Allow it to start fully.

If you open Device Manager (e.g. right click Windows Key -> Device Manager or from the Control Panel), you should now see that the Bluetooth section has reappeared and there are no Unknown USB devices in the USB section. This means that your Bluetooth is now working again.

This apparently works by disconnecting the power (even residual power) from relevant chips which mean that they re-establish communications from scratch when you restart.

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50 additional answers

Anonymous

2021-03-10T05:00:50+00:00

Hi,

it worked sir thank you!...but it happened again....Is it okay to follow your steps over and over again when this happen?
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Anonymous

2021-03-09T03:00:30+00:00

I have had the same issue and while performing the hard shut down does bring back the bluetooth in the device manager, it's only temporary. As soon as my laptop sleeps or hibernates, it's back to the unknown USB Device and error Code 43 - Windows has stopped this device because it has reported problems.

Do you know of a way to fix the core problem of the pc not recognizing the chip?
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Anonymous

2021-02-12T07:06:39+00:00

Hey man I had just spent an entire evening trying many other fixes, hell, I even ended up wiping my computer clean and that didn't fix it. I found your comment at 1 am with basically no hope, and it worked.

Thank you so much for reposting the solution indeed. You have no idea the relief I felt after seeing that bloody bluetooth square on the menu. Have a good one and best of wishes!
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Anonymous

2021-01-31T16:36:32+00:00
Andre's reply is a bit disappointing as he thanked somebody last year for providing a solution to this issue that worked for the requester and has also just worked for me:

https://answers.microsoft.com/en-us/windows/forum/all/bluetooth-not-working-usb-device-descriptor/2af8f09f-ce33-47f8-a42a-1b55e8cf60fd

The problem is that your system is not recognising the Bluetooth chip and thinks it is unplugged and it is seeing an unknown device that is not communicating correctly.

A simplified version is as follows (I found that it was not necessary to drain the laptop battery completely):

Perform a hard shut-down by holding the shift key is held down whilst selecting Windows Shut Down

Ensure your computer is unplugged

Hold down the power key for 93 seconds. That's 90, which is the maximum recommended elsewhere plus 3 to make sure it is over 90!

Press the power key briefly to start your computer

Allow it to start fully.

If you open Device Manager (e.g. right click Windows Key -> Device Manager or from the Control Panel), you should now see that the Bluetooth section has reappeared and there are no Unknown USB devices in the USB section. This means that your Bluetooth is now working again.

This apparently works by disconnecting the power (even residual power) from relevant chips which mean that they re-establish communications from scratch when you restart.
This thread is a lifesaver. I did in 93 seconds what Dell did not on the 2 occasions I sent my laptop in for this issue. Not sure if this is a permanent fix, but at least now I know what to do.
Was this answer helpful?

1 person found this answer helpful.

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