Sorry Matt, but you do not have the filters, so nothing to delete. I will have a browse and see if there are any other solutions.
Later. I do not consider this an answer to the Windows 7 DVD problem, as it is happening with different models of DVD burner but, Having a look around the web, I can see that the NEC 3550a is giving particular problems. I can only suggest you wait and see if anyone, including Microsoft, can come up with a positive answer. I see you are on a couple of other help sites. If anyone gives an answer that works, perhaps you could be kind enough to post back here.