fullscreen problem

[warioman]

when i put mugen to safe, hardware, or software, a message pops up
and says:

can't change video mode to 320x240x16 bits.

how can i fix this?

[profylebryon]

try this before asking that question leave it at 640x480 or w/e you have on and then hold alt and press ENTER(on keyboard) it will make it fullscreen