After upgrading my Surface Pro from Windows8 to 8.1 my only USB stopped working by saying  "Unknown USB Device (Device Descriptor Request Failed)" Could you help ?

Hello Serkan-G,

Please refer to the following article to update the Microsoft Surface Pro 3 firnware.
https://www.microsoft.com/surface/en-hk/support/install-update-activate/pro-3-update-history

Best regards,
Fangzhou CHEN

Hi FangZhou,

My Surface Pro version is 1. And Last night I did all the updates available, but still having the problem.

Regards

Please upload a copy of your system information file. Click "start" , type "msinfo32" , Click "file" at the top of the page, select "export" and give the file a name and click "save" .

Navigate to where the file was saved to, and upload the generated text file to a public folder on your OneDrive account and post the link here.

Thanks for help. I Hope you can help

I put two system info files

1. Plain simple System Info

http://1drv.ms/1bBQtcS

2. System Info when a mouse is connected through usb ( which doesnt work because of the situation )

http://1drv.ms/1bBQlu7

Regards

SG

That device is a USB 3.0 driver.  Suggest you re-install it.

I uninstall and installed it couple of times. Is there someway that I can do differently?

Please run a system file check (SFC) & DISM if you are on win 8 or higher
All instructions are in our Wiki article below...
Should you have any questions please ask us.

System file check (SFC) Scan and Repair System Files

Hi Zigzag3143x

I did sfc two times ( while a usb device connected also ) but no problem came out of them.

Windows Resource Protection did not find any integrity violations.

 Just to be on safe side i ran dism also.

[==========================100.0%==========================]
The restore operation completed successfully. The component store corruption was
 repaired.
The operation completed successfully.

• Edited by Serkan-G 23 hours 44 minutes ago

Hi Zigzag3143x

I did sfc two times ( while a usb device connected also ) but no problem came out of them.

Windows Resource Protection did not find any integrity violations.

 Just to be on safe side i ran dism also.

[==========================100.0%==========================]
The restore operation completed successfully. The component store corruption was
 repaired.
The operation completed successfully.

• Edited by Serkan-G Saturday, April 25, 2015 7:38 AM

Hello Serkan-G,

As lack of test Surface computer, to receive better support, it is recommended to post in the related Surface community.
http://answers.microsoft.com/en-us/surface/forum?tab=Threads
The professionals there will be glad to help you.

Thanks for your understanding.

Best regards,
Fangzhou CHEN

Thanks FangZhou ,

Even though I couldn't get any help from MS after tens of mail, I did it again, Maybe something changed in time. However I'd still appreciate if anyone has suggestions.