Can't enable fullscreen mode

Downloaded the latest version. Set the Video mode to fullscreen and the resolution to 640x400f but the app stays windowed.
Using Win7, I unblocked the zipfile in the properties before extraction.

In the system.cfg the video line reads

[("640x480w")] Description of video mode parameters (WWWWxHHHH[flags])
i_videomode "640x400f"

which has both windowed and fullscreen resolutions

thoughts?

If you use 640x480f instead of 640x400f does it work?

Yeah that worked, thanks. Ended up with 1280x1024f with 5:4 pixels (so the aspect ratio looks correct). Resolution support seems a bit hit or miss on this PC/Monitor.

Szymanski said:

Yeah that worked, thanks. Ended up with 1280x1024f with 5:4 pixels (so the aspect ratio looks correct). Resolution support seems a bit hit or miss on this PC/Monitor.

What aspect ratio does your monitor have?

http://www.overclock.net/t/539967/list-of-display-resolutions-aspect-ratios