Check the display tab in that window.
Alternatively, you could use a program called Speccy. Check this thread for info on that viewtopic.php?f=10&t=26
Now other questions. Answer ALL OF THEM.
1) Was this the first time you ran Mari0? Did it work before on the same computer?
2) Does the game crash immediately or does a windows show up for a split second (or longer)?
3) Have you installed any mods or other custom content?
4) Do other games work on your computer (for example Ortho Robot)?