wassup all...
my first time ever posting on any forum...i'm doing this cause i got a lot of good info from this site that helped me out quite a bit...
so i had the same "usb device not recognized" error, shortly after i tried to use a 4 port usb hub...that screwed everything up...
anyways i read instructions posted on this site by ross_aveling it was a good effort but it worked only half way...
i did restart my system in safe mode and take out the usb devices in device manager and add/remove programs...but that alone didn't help....but when i SYSTEM RESTORED to a date before i used the crummy 4 port USB hub and then switched back to normal mode....it corrected itself....hope this helps....i'm not very IT help inclined but i really hope this helps someone who was feeling like smashing a few things like i did when this happened...
