I've downloaded the Arduino software and extracted all files.
Firstly I cannot find the COM/LPT ports. When in device manager there is an unknown device (the UNO board). When I right click and update drivers, when I get down to the arduino directory there is no UNO.inf file. Only two folders.
When I initially did this it would not install. I followed the folder path and found the files, rebooted and tried again. Finally it worked. It was strange how it did not appear until after the reboot.