@mitu ok mate i try this weekend (i have this TV in other house) the hack its because its a game translated to my language (spanish) thats why it appears like a hacked game, but it occurs too with the others rom, i will try that. Thanks a lot!!!
@Rabbitfoot right after you select the N64 game you want to play and start it, for a brief moment there is usually a little grey box that appears. The grey box says to push a button to open the options. Whether the grey box comes up or not, just hold a button down right after pressing the key to start the game from within the list of games to choose from. Then a menu will start that allows you to change the emulator, resolution, etc. The emulator you are using probably works best for the N64 games. Using a lib-whatever emulator, you will probably have to lower the resolution to its lowest.