Hi people.

I'm trying to run MBF Doom 2.03 with Ultimate Doom WAD file.
The game boots up and works but when I try to set it to "High resolution" in the Setup Menu my computer reboots.
I also tried Sigil WAD and when I try to save the game it also reboots.

Any ideas???

I'm using Ms-DOS 6.22 on a Pentium 166MMX (Multimedia Packard Bell).