Can it be done?

Reason:
while most of my games work on Compoment cable <> VGA converter, some like Madworld just get the power light of my LCD flashing (out of synch) the game is not crash, it just not 480P (probably 480i). when i use only the compoment cable on a different monitor. it work.

since i prefere playing on 26" and not a crappy 21" with a column of dead pixel in the middle it. can a ISO be modified to FORCE 480P?