I have a sabrent PCI tv tuner.  I installed it last night, had the video working for a bit.  I was renaming the chanels, and now the video does not play.  All I get is a black screen with a bit of fuzz at the bottom.  I re-installed the software, It did not fix the problem.  Anyone have any ideas on what I could do to get this operational again?
Any help will be greatly apreciated.
BTW,  I am running Windows 7.