"Can not set video mode" - ??

[brut4lhedgeh0g]

Okay so I'm kind of new to this and all. I downloaded a game and I was playing it earlier. I decided to do something else so I quit the game and did whatever. A few hours later I wanted to play again, but it came up with the whole "There was a problem initializing graphics mode 320 x 200 (16-bit). (Problem: 'Can not set video mode')" - ect. You get the point.
I know tons of people probably already answered this question but it just confuses me. I'm not really good with this stuff.
I mean - what could've happened in the few hours that I was gone that could not allow me to play this game again?

[Mr Flibble]

Have you tried changing the resolution in the "winsetup.exe" file that came with the game, and then select the 2x graphics filter? Or select "run in a window" and see if that works.
The only problem with that is your saved game from before wouldn't load after changing those options (as far as I know?) so maybe someone else can offer a more robust solution.

What were you doing between now and when you were playing earlier? Are there any new programs running?

[Khris]

Using the x2/x3/x4 filter won't break savegames.

It used to be possible to change the native resolution, those savegames were incompatible.