No Mobile Device Driver

Q: Apple Mobile Device Driver still missing after iTunes
uninstall/reinstall

My computer (PC running Windows 7) stopped recognizing my mobile devices
(iphone, ipod and ipad). The mobile device driver was nowhere to be
found. I followed the discussion lines and carefully uninstalled and
reinstalled iTunes. Apple Mobile Support is in the program list, but
still no mobile device driver (I checked every device list). How can I download
the device driver in a safe way? And why didn't the reinstall work?