Z87-G45 USB ports disconnecting / not recognized
I am having some frustrating issues with usb devices. The only USB device that seems to work is my mouse plugged into the back 3.0 port.
Computer is 2 weeks old and I originally loaded windows 8.1 pro from USB on a fresh install and it worked great and was working fine until a few days ago. I noticed the issue started when I turned the computer on from a power save and the bios got stuck on a black page with the code "9c". When usb devices were unplugged this went away. If i plug them back in they won't stay connected and if I restart "9c" error code returns.
At one point I was able to have my 2gb seagate USB drive + a 16GB flash drive + a logitech webcam plugged in and all worked beautifully.
Something changed - now if I plug anything into the front usb ports I just keep getting windows reconnect/disconnect dings. If i plug into the back USB ports I am getting "USB device not recognized" and other errors. Keyboard works fine as its plugged into p2p port and not USB.
My bios is up to date and also there are no exclamation marks in the device manager.
I have tried changing the power management settings,
uninstalling all USB devices in Device Manager
unplugging/re installing logitech g400 mouse and drivers
I reinstalled chipset drivers from MSI support page
Checking/replugging the front usb 3.0 connector on mobo
This is driving me insane.
Aha, that is the newer chipset for sure. That destroys my initial thought then.
Added: How are the Control Panel Power Options set up in the OS?
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