usb port problems

About 2 days ago, my USB ports abruptly stopped working. The computer in question is running XP SP2. I've checked the device manager and it shows that all ports are working properly (BUT THEY"RE NOT).
All drivers seem to be OK...anyone have any ideas?

 

Have you tried uninstalling them from device manager, and restarting?

 

We uninstalled all USB ports, rebooted, re-installed but they still won't work. Appears that there's no power to them...they're dead.
What's next?

 

having the same problem , running same systems did you find the cure?

 

Did you recently install any Windows Updates
within the last 2-4 days or right about the time
they stopped working ? ?

Try a System Restore to say 1 week ago
or if updates were installed, try uninstalling
them and see if the usb works again.

 

boooo ...lol that didnt work yes im running sp2 i have taking the computer to it's shipping state atleast 10 x's , this sux still not resolved. i can power everything.. mp3 player, mouse..etc but does not show that anything is plugged in . what did you end up doing to solve this wonderful mystery