My computer is acting up and i cant get a frontpage on my submission but the art is there in its original size.

Can you submit something without a cover?

I did that accidentally a few minutes ago, so maybe. For the Jam, try to at least have the original 160x144px as the cover if all else fails. You can to use paint or an online upscaler if you keep to doubling the size, like to 200% or 400% it shouldn't damage the pixels.

In any case,  the original will show the organizers its an actual entry at least even if upscaled to hell