Problem with USB Ports

[netkliks]

I have a newer PC. About a year old. Just recently my USB Ports are not performing as 2.0 ports They perform at very slow speed. I get an error, telling me there are no 2.0 ports installed in my PC. My PC came with 5 USB 2.0 ports installed. My scanner, printer, burner are all working, but very very slow. PC specs are below. Sure hope someone can help.

Compaq Presario
1.6 gig processor
2 gig ram
120 gig Hardrive
Windows Vista

 

[netkliks]

I Uninstalled the driver for the USB controller and rebooted. PC reinstalled the driver. Now all ports work perfectly.