Moen's thread gave me the idea to seek help here.
I have the Hauppauge PVR PCI II which Hauppauge told me is a PVR 250.
It started malfunctioning a few months ago. Sometimes when I start WinTV2000 (or WinTV32) it will seem to start okay but the "TV screen" will be black. Other times it will start very slowly and the "TV screen" will not show anything. I can see the wallpaper behind it.
If I uninstall and re-install, it will work fine. It will continue to work fine all day even after a re-boot or standby-resume. But the next day it will have the same problem and I have to uninstall and reinstall.
I have 3 XP installs on this computer. The problem is the same on two of them. The third XP install is virgin. I never installed any apps or updates and it's never been on the internet. On this XP, my WinTV worked fine for three weeks. The only problem was it would show the black "TV screen" the first time it was started. If I kill and restart it, it works fine.
Then I installed Nero on this XP. After that, WinTV would start very slowly and show nothing but my wallpaper on the "TV screen". I uninstalled Nero and now it starts fast but shows the black screen. I should mention that I have Nero installed on all my other XPs also.
Hauppauge has newer software on their website. I tried that but it doesn't fix the problem.
I don't see any error messages and I don't see anything in the Event Log.