I'd avoid beta copies of DirectX if I were you. If it fux0rs your system you usually have to reinstall Windows to get rid of it.

Members of the Windows 1.0 team at their 40-year reunion this week. L-R, kneeling/sitting: Joe Barello, Ed Mills, Tandy Trower, Mark Cliggett, Steve Ballmer (holding a Windows 1.0 screenshot) and Don ...