Windows 10: making port 3.0 work for usb 2.0

I have got 3 usb ports in my laptop. 2 of which are specified 2.0 (let's call them Ports A and B) and remaining 1 runs usb 3.0 perfectly (Port C)
I use USB mouse on Port A and USB keyboard on Port B. However, Port B is a bit loose, it's been used countless times, so a little shake on the keyboard wire or the laptop disconnects it and it gets bugged. I have to restart pc to fix it and reconnect usb keyboard.
Yesterday, I went to sleep without disconnecting the usb keyboard from port 2.0. When i woke up, port was bugged but this time it was different. Restarting windows didn't fix it. When I connect the keyboard usb, it makes Connect Sound and Disconnect sound in windows repeatedly and the following "WINDOWS DIDN'T RECOGNIZE THE USB". In Device Manager it shows "Device Descriptor failed". I can say It's dead.
I want to work around it and get my Port C (3.0) to work for my keyboard. It had never worked previously. So I went to BIOS and disabled xHCI (which apparantely controls 3.0 functions) so disabling it would make the port 2.0. I disabled it and after the windows boot. It still says Windows Doesn't Recognize this USB. It should work for my keyboard right? Should I reset the usb drivers with installation package? how do i do it (there's no option for delete driver software)?
In Device Manager > USB... I have the following;
2x Generic USB Hub
Intel 8 Series USB Enhanced controller #1 9c26
USB Composite Device
USB Root Hub

:)

 

help with raid 0

in pre post hitting tab key

initializing usb done
12280 mb ok
usb devise 1 mouse
Auto detect sata port 1 cd
2 cd
3 ocz vertex turbo 1.4
smart capable & status ok
4 wdc ----
smart status ok
6 wdc ---
smart status ok

now I finish post and next see intel matrex storage:
raid volumes

id name level stripe size status bootable
ssd raid 0 stripe 128k 178.8 normal yes



port serial size type / status


2 ocz ---- 59.6gb member disk 0
3 wdc ---- 931.5 gb member disk 0
5 wdc --- 931.5gb member disk 0


Ok, my question is in first auto detect my ports are listed 3-4- and 6
in the intel matrix storage ports are listed 2-3- and 5 ??? is this my problem and if so how did this happen .

 

Not working USB 3.0 Ports on Asus M5A99X EVO R2.0

Also, try what worked in the following link:

[motherboard] USB 3.0 Ports Not Working, USB 2.0 Ports Are - Computer Hardware Help | DSLReports Forums

 

USB 3 Ports not working

Hi folks,
i was trying to copy some files from an external drive using the usb 3 port on my M/B but it doesnt work, i downloaded the drivers from the Manufacturers website but no luck either, am i missing an important step here? i havent checked the Bios yet
GA-Z170XP-SLI (rev. 1.0) | Motherboard - GIGABYTE Global