I connect to my TV trough HDMI with catalyst 8.6.
My video setup:
VRM9 + MPV/MPA with default options.
Did you install DVBFix? (make a search on it)
The problem is now solved. I had installed the DVBFix when building my machine a few months ago, but I didn't realize it has to be reapplied after XP SP3. So I reinstalled the fix now and it won't freeze again. Thank you fabien.