Windows 7: USB - Enhanced USB Host Controller Not working - Drivers!!!

Folks,

I have been working on this on/off all weekend and I STILL cannot get my USB 2.0 ports to work again and they were all working fine for the past 10 months. All 8 USB ports stopped working in 2.0 mode last week. They work perfectly fine in 1.1 mode using the standard Host Controller (BIOS is set for 1.1+2.0) when I disable the enhanced host controller.

My drivers are apparently screwed and I have done mostly everything suggested in various web sites to revive them (they had to be overwritten!).

My mobo doesn't have any updated chipset drivers (nVidia) and I simply reloaded my XP drivers to no avail.

Outside of the obvious/common troubleshooting, any one have any thoughts on this issue? I believe an update killed my ports!

Thanks!
BillyD

Check this out:
Windows 7 sp1 & USB2 bug.
USB Driver - General Fix for Problems

I'll give it a whirl!

Thanks!
BillyD

Crap...neither method did a thing. Once the Enhanced Host Controller comes back, the USB devices die. If I disable the EHCI, all USB devices work...of course at v1.1 speeds!

Next?

Thanks!
BillyD

Any idea what else to do gents?

Thanks!
BillyD

Bump

This was the fix. In troubleshooting the USB 2.0 issue, I noticed I had to disable 1 of my USB Root Hubs to get any USB 2.0 device to work even in 1.1 mode~! So, I figured my BIOS was corrupt. With nothing to lose, I cleared BIOS, loaded BIOS Optimized settings and waala...all fixed. This was for a FIC K8MC51G mobo using nVidia 430 chipset and Phoenix BIOS.

I thought I'd complete this for the benefit of others.

Thanks!
BillyD