HP laptop, DirectDraw audio / Video problem

Have HP 6730b,
and it has Directx 9.0c
I tried to do an update from MS,

First thing you see is a problem, is quicktime, it studders, you can go into control panel with
quicktime and set to save mode, not use DirectDraw, and it sees to work ok.

Big problem is we have the software Wirecast by Telestream, and it uses the Directx stuff,
and the Audio repeats, or echos when you play an audio file.
Video appears ok.
People at telestream can not help,
I have wiped this laptop and put fresh copy of XP pro, and the drivers disk that came with the computer.
Computer is 2 months old.
Any Suggestins.
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yahoolaneAsked:
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yahoolaneAuthor Commented:
There problem was the the implimation of the XP for this laptop,
6730b, is a business and comes with XP pro and Vista

I had reinstalled the XP from the recover disk and the computer had the same problem.
So it was something at the drivers level.

I installed Vista from the recovery disks and quicktime,  everything is working now.

There a few articles of people having problems with the laptop and Activex, with no solution.
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souseranCommented:
What version of QuickTime are you using? QuickTime 7.6 for Windows XP or Vista is the latest.

http://appldnld.apple.com.edgesuite.net/content.info.apple.com/QuickTime/061-5376.20090121.BD7E9/QuickTimeInstaller.exe

Also, what's the date on your DirectX 9.0c? DirectX End-User Runtimes (March 2009) are the latest.

http://www.microsoft.com/downloads/details.aspx?familyid=0CF368E5-5CE1-4032-A207-C693D210F616&displaylang=en
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lauchangkwangCommented:
try click on start > run > type in "dxdiag" ...... It is stand for DirectX Diagnostic ..... run some test over there and see whether got any problems or not
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