My USB2 ports have stopped working. Both the front and back panel. However, all of the USB3 ports still work. I've uninstalled the drivers, reinstalled them and even completely wiped C: and reinstalled windows. So I'm fairly certain that it's a hardware issue. The interesting thing is though that the ports still provide power to charge things. Can anybody shed any insight into a possible fix for this? I really don't want to have to buy a new mobo because the 2500k is still a great CPU
also, heres the device list
oh and i have a P8Z68-V PRO/GEN3
Sounds like your southbridge may have died. Or at least the USB part of it has, because that's where all of the USB 2 port connect to. Interesting that everything else works though. Unfortunately the only solutions I know of are to buy a new motherboard or a PCI USB card.
EDIT: correction it's now called the Platform Controller Hub, not southbridge.
Check BIOS to make sure USB 2.0 controller isn't disabled.
My front panel stopped working, I'm not sure if you have the same problem as me but i got mine working by going into the bios and disabling legacy usb mode.