Repeated hwclear and driver installation, intermittent "hTV=0" error

[kaon]

I had the PVR-150 working for a few months on a DFI-NF4 (nVidia) mobo.
Then the mobo crapped out.
So I pulled the system harddisk, (WinXP with Hauppauge drivers and apps), and transplanted it onto a Intel 945GNT mobo.
The TV card was not detected.
I tried different PCI slots, and finally remembered to use HWCLEAR.exe. This did help get the TV card detected.
But it was still not perfect.
I had to use HWCLEAR and reboot many times, before the setup.exe would fully complete.
It did work for a while, I could view live TV.
But after a reboot, the TV-card would go missing again, with "WinTV initialisation failed. hTV=0".
So what is up with this?
I see many threads having similar problems, mostly seem unsolved.
Should I give up and buy a newer product?

[SHS]

That rigth there going cuases you kind of problem you should format and reinstall XP and everthing eles.
One thing you could try and see if work is changing the overlay mode after all the on board video is no where nor as good as the nvidia or ati one's