Videos display flashing colors and "format error"

[vasdef]

The upgrade finally took. found out it wasn't a 4 gig, but a 2 gig. Not likely I'm going to run into the guy who sold it to me in a dark alley, but I'll take the 2 gigs for now.

Now, video is a problem. I tried many diff. settings and all I get is a couple seconds of fast flashing colors then the famous "Format Error" message.

Any ideas?

Thanks.