USB TV Tuner Problems - Leadtek Dongle

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I got this:

http://www.overclockers.co.uk/showproduct.php?prodid=GX-075-LT

but I'm having problems with it :(

Initially it worked, now it doesn't and I can't get it to work on two different PC's. I don't think it's faulty - just that there is a driver / compatibilty issue somewhere.

First Test
I had a new Dell C152. Straight out of the box I let it do it's post install stuff and once configured I plugged in and installed the TV dongle.

This worked great - I got many channels, the remote worked, everything!

Update XP, install essential apps remove guff
Next I updated XP so that it was fully patched. I installed SPF, AVG, Defender, K Lite Codecs - plus other standard install stuff I use. I removed some of the Dell 'freebies's and considered the PC to be up for use.

But the TV Tuner would now not work. When running WinFast TVR I would get this error:

DVBTAP.EXE error with NTDLL.DLL

Googling found suggestions such as downloading latest DVB driver and WinFast app from Leadtek but that did not work.

Other suggestions were to use a different TVR/PVR but they just come up with no device type errors - besides the standard configs do not list the Leadtek device.

Next I tried uninstalling and installing but this is not easy to do. There are a whole load of things left in the registry even after uninstalling and removing the device.

I manually removed as much as I could and then re run the install.

Now when I run WinFast I get a stop message saying DirectX required.

DirectX is installed and updated to the latest version!

Other PC
I tried on a different PC and got exactly the same problem.

After the PC is fully patched I get the DVBTAP.EXR / NTDLL.DLL error.

If I manually uninstall and reinstall I get the DirectX error.

Clues
Googling some messages from around December 2006 shows that other users of different cards are also having the NTDLL.DLL error.

It's as if a Microsoft update from around that date, or the installation of something like Media Player 11, Codecs, or something else is causing NTDLL.DLL to fail.

What next?
What do I do now? Should I waste more cash on a different brand of USB Tuner or will I get the same problem?

I don't think it's worth contacting Leadtek support yet as they'll just say send the bug report and machine setup printout and do nothing I guess!

The only thing I can think of is to reinstall windows and install updates / apps one by one until I find which procedure breaks the Tuner!
 
I found beta software for WinFast dated 9-Jan-07 so maybe they are working on the dvbtap.exe / ntdll.dll problem. This beta version still has the problem though.

I installed .net 2.0 as I could see that some of the pvr software required it.

That got PROGDVB working but I still can't get the Leadtek WinFast to work (prefer that to progdvb) and Media Center will still not detect the tuner card.

BTW, installing .net 2.0 and uninstalling the preinstalled 1.1 caused Media Center to fail. It's like Media Center will only work with the older .net

So much for all this 'enhance your media experience, watch and record tv with ease' etc. I wonder if Vista spins the same line?
 
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