I've got an X1600 and AMD/AMD dropped support for that (and your card) starting with Catalyst 9.4.
I'm surprised your driver
installation worked ... but then, I'm reminded back of days in Vista when the ATI driver would NOT install, even though it was supposed to work.
So maybe now, the opposite happens -- in installs flawlessly when it shouldn't. (You can tell I'm NOT a fan of AMD/ATI)