My first was a fake and I spent days trying to get it to work. I gave up in the end. It just isn't worth the man hours.
How much did yours cost?
How many hours have you spent on it?
In all honesty, if you have now tried it on 2 different spec systems and it still won't work, I don't think it ever will. Can you send it back?
If you take a good look at this forum, 99% of all posts are to do with "easycap" and not "ezcap". That's because there are so many manufacturers in China pumping them out, you don't know what you are getting and they all use the same retail packaging!

Bottom line is they
are all counterfeit. So it's pot luck on what you actually get. Are you buying a copy? or a copy of a copy?
.