I have the same card and I have a similar problem but with the 16.2.1 crimson drivers in Windows 7 x64, with the 640x480 resolution it often gives me black screen it does when I mainly launch Type x or Teknoparrot games and often stays like that when I go back to the desktop , to restore it I have to change it by hand, put another resolution and then again choose 640x480 ... when the screen is black via vnc the game shows up so I think the game wants to start with 640x480p and not 480i and having the jammasd card I get the black screen when the resolution goes out of sync, if I go to the settings of the windows card I give 30hertz interlaced or 60hertz, 60hertz interlaced not c0p while in arcade os both 604x480 30i and 640x480 60i are listed, also after a while in interlaced resolutions the screen starts to wobble exaggeratedly to the point of hurting your eyes by turning the monitor off and on again after a few minutes you can see it correctly again.