Video Controller ? software download

I have reformatted my hard drive, with the result that I can now only display in 16 colours and 640 x 480 pixels !

I have tried downloading what I think is the correct software, but to no avail. Can somebody help ?

In various places on the graphics card, I have the following :-
FCC 32M CM64A ver 1.0
491-1M64A3400
4MX16
3892A413

On the main processor on the card is : AMIC A290011TL-70 0136D 878563