I'd like to thank BradleyW for this guide. I just spent six hours trying to install the drivers for my ASUS EAH5450 HD5450, and this was the solution.
For anyone Googling to solve the same problem as me, I tried multiple versions of the driver and received the following error messages: "The operation returned because the timeout period expired". "Driver Install: the installation failed." and "The driver selected for this device does not support this version of Windows."
After following this guide, I used Device Manager's "Browse my computer for driver software" >> "Search for driver software in this location". I pointed it at the latest version of the driver downloaded from ASUS's website.
Edited by Mango45 - 2/21/13 at 5:39pm