Your card isn't supported in the latest guide that I successfully used for my setup.
Why not buy a newer card and try that since it would be a lot less headache?
http://geedorah.com/eiusdemmodi/forum/viewtopic.php?id=301
You are right, my card is not explicitly listed as compatible. I took for granted that any HD 46xx series shoud have the same chip and similar features reading this:
Catalyst 9.3: ATI Radeon 9500, 9550, 9600, 9700, 9800, X300, X550, X600, X700, X740, X800, X850, X1050, X1200, X1300, X1550, X1600, X1650, X1800, X1900, X1950, HD 2350, HD 2400, HD 2600, HD 2900, HD 3200, HD 3300, HD 3400, HD 3410, HD 3450, HD 3550, HD 3570, HD 3600, HD 3610, HD 3690, HD 3730, HD 3750, HD 3800, HD 3830, HD 3850, HD 3870, HD 4230, HD 4250, HD 4350, HD 4550, HD 4570, HD 4580,
HD 4650, HD 4670, HD 4730, HD 4750, HD 4800, HD 4850, HD 4870, HD 4890, etc.
Mine is detected by w7 as "4600+". I did'nt think that number made a difference among the millions of different versions in a siingle sub-series. Indeed, in my vertical cabinet I was using a 4350, which formerly was used to test with this same TV. So It was not exactly the same video card. Hence I cannot tell if it is a TV or a video card problem unless I try back the 4350 in this TV.
I have as well an ATI RAGE II fury PCI 8mb card, but it looks too old to bother to try it?. So in case I buy a new card, what's the least troublesome video card to use along with groovymame?