I have a asus p8z77-v lk mother board. after i installed windows 8.1 i noticed my key board and mouse were inop. i moved them to different usb ports and they now work. i have 4 usb 3.0 ports on back and none of them work. ive tried updating drivers, no change. ive tried using action center and following it step by step to repair, no change. ive uninstalled and reinstalled drivers and still no change. Does anyone have any advice on how to repair this concern? I hate knowing that i have 4 usb ports that were working perfectly fine before the update and now i cant use them. Also if i cannot resolve to concern, how do i go back to plain old windows 8 haha

thanks for the advise. unfortunately none of it helped. the usb ports started working properly for awhile and then i noticed in control panel the mouse would not line up. i could not select anything with the coursor, i needed to use the tab and arrow buttons. so i restarted the pc, and then again the 3.0ports werent working. still arent. seems to be the only problem im having at this time. 

i went to device manager and select affected port, checked for updates, used browse computer. and selected manually, hit next, after progress bar completed the ports started working. ill will keep you up to date on how much longer this lasts. thanks. 

Hi mattzman62, 

Please try the following methods to solve this issue:

Method 1: Run hardware troubleshooter

1. Press Windows + W in the keyboard.
2. Type Troubleshooting in the search box and press Enter.
3. Click Hardware and Sound.
4. Click Hardware and Devices, and then click Next in the wizard. 

Method 2: Scan your computer with Microsoft Safety Scanner.

The Microsoft Safety Scanner is a free downloadable security tool that provides on-demand scanning and helps remove viruses, spyware, and other malicious software. It works with your existing antivirus software. For your information, please review the following link to learn more about this tool and download it:

        http://www.microsoft.com/security/scanner/en-us/default.aspx

Method 3: Review the following links to get more help:

     What if a device isn't installed properly?

               http://windows.microsoft.com/en-US/windows-8/what-device-isnt-installed-properly

     Why isn't Windows finding my device?

              http://windows.microsoft.com/en-US/windows-8/why-isnt-windows-finding-device

Install USB 3.0 and other USB devices

             http://windows.microsoft.com/en-US/windows-8/install-usb-3-usb-devices

Regards,

Lany Zhang