Twinsoul,
Since the manufacturers have not created drivers for Windows Developers Preview, I suggest you update to the most current Windows 7 driver.
You can download the most current drivers from the manufactures website
http://www.asus.com/Eee/Eee_Pad/Eee_Slate_EP121/#download.
If that doesn't work, then try to install in compatibility mode to see if that resolves the problem.
You can do this by:
· Enter the Start screen
· Move your mouse to the bottom left of the screen to expand the Charms section
· Select
Search
· Type
Compatibility
· Click
Settings in the right column
· Click
Run programs made for previous versions of Windows
· Then follow the prompts and direct the troubleshooter to the installer for your computer's driver.
Let us know if this helps.
Chris