Why do my games look like this?

[skyblast]

32 bit system
Maximus FE
P4, 2gigs ram
Windows 7
Mame32b

So I've decided to build a second arcade.  This time a cocktail.  I'm at the point where I'm testing out all of the hardware and software before I cut a single piece of wood.

I've basically taken all of my roms, emulators etc and transftered them to this (listed above) cocktail computer.  

What's strange is that some games work fine but others look like the pic below.  I can only see half the game?  I know it's a resolution thing but why do some games look fine and the others like this?  It's been three years since my last build and I can't seem to remember for the life of me how to fix this issue???  

Any help would be greatly appreciated.  Thanks

[mamefreak2]

Try hitting tab and going into video options. Debug might work for you or you could try cocktail.

Good luck.

[skyblast]

It's fixed now but thanks!!  I had to fix a few things in the emulator.