All my 2.0 USB ports stopped working

So, today without previous warning all my devices connected to my computer's 2.0 ports started working defectively. They barely work (sometimes) and I cannot think of something that could have caused this. My computer has 6 2.0 usb ports and a single 3.0 so this is a pretty big issue for me.

The devices I use are the following:
- An XBOX 360 controller
- A G300 Logitech gaming mouse
- A K290 Logitech keyboard
- An Asus "strix" adapter for my headset/speakers

I usually have the adapter in the USB 3.0 port for no special reason, but after some testing I could find out that all 4 of my devices worked perfectly when plugged to the 3.0 while none worked with ANY of the 6 different 2.0 USB ports.

I would appreciate any help since I find it a really strange issue. Don't hesitate in asking any more information on my settings or anything if you think it is needed.

Thanks