Rear two USB ports not working (Gigabyte Motherboard)

[Gohdan]

Device: Gigabyte Z170MX-Gaming 5 motherboard
Operating System: Windows 10 64 bit, up to date

I purchased this from a friend a few months ago, he insists the ports worked for him while he was using it. All of my drivers are up to date, including the drivers from the motherboard website and I don't think I've missed anything. http://www.gigabyte.com/products/pr...spx?pid=5498#dl is the website I used for drivers.


Essentially, my two front USB 3.0 ports work, my red USB port in the back works and all of the other blue USB ports in the back work... except for the two yellow ones which apparently serve as a DAC-UP as well. I have absolutely no idea how to get these working and I couldn't seem to find any specific DAC-UP drivers on their site. If it matters, I don't care about the DAC functionality, I just want the USB functionality.


I've tried multiple devices, I've tried reinstalling Windows and I've even tried using various different USB devices to no avail. This includes a mouse, keyboard, powered external HDD and non powered external HDD.
The power doesn't work from the drives and the low-powered devices aren't registered. Is it possible this is something wrong in the BIOS? http://i.imgur.com/aKjBoEX.jpg is a picture of my Device Manager if it helps - 6 devices show under USB controllers, presumably the 6 USB ports (including the front 2) that do work.

[Guest]

Clear CMOS maybe?

[Squibbies18]

11 minutes ago, Gohdan said:

Device: Gigabyte Z170MX-Gaming 5 motherboard
Operating System: Windows 10 64 bit, up to date

I purchased this from a friend a few months ago, he insists the ports worked for him while he was using it. All of my drivers are up to date, including the drivers from the motherboard website and I don't think I've missed anything. http://www.gigabyte.com/products/pr...spx?pid=5498#dl is the website I used for drivers.


Essentially, my two front USB 3.0 ports work, my red USB port in the back works and all of the other blue USB ports in the back work... except for the two yellow ones which apparently serve as a DAC-UP as well. I have absolutely no idea how to get these working and I couldn't seem to find any specific DAC-UP drivers on their site. If it matters, I don't care about the DAC functionality, I just want the USB functionality.


I've tried multiple devices, I've tried reinstalling Windows and I've even tried using various different USB devices to no avail. This includes a mouse, keyboard, powered external HDD and non powered external HDD.
The power doesn't work from the drives and the low-powered devices aren't registered. Is it possible this is something wrong in the BIOS? http://i.imgur.com/aKjBoEX.jpg is a picture of my Device Manager if it helps - 6 devices show under USB controllers, presumably the 6 USB ports (including the front 2) that do work.

clear CMOS and if that doesn't work check if your board comes with any warranty and send it back for a new board of a refund if you can. 

[Gohdan]

Clearing the CMOS worked.  Thanks guys!

[Guest]

5 hours ago, Gohdan said:

Clearing the CMOS worked.  Thanks guys!

Glad it worked