Just reinstalled a Lenovo laptop with Vista. 

Two separate USB sticks, that work fine on another computer, will not show up on this Vista computer. USB ports work fine for other stuff. USB sticks worked before I reinstalled the computer.

After looking around, I tried going into Disk management, to see if they appear there - they don't.

Is there some sort of service, that might be disabled, not allowing removable drives to mount? Or what else can be wrong?