I've checked the file. It works on other computers. other 32bit OS's.
OK I'd be suspecting a problem with your machine then.
You could try looking at un-installing and then re-installing Archicad.
That shouldn't be the issue but I have seen stranger things happen.
I would suspect video drivers, faulty RAM, windows updates.
Go to your device manager and check there are no errors on your devices.
Try the latest drivers for your video card.
Consider upgrading to 64 bit Windows 7 - means backing up all your data and re-installing all programs.
It could even be just a combination of that particular file on your machine.
Try a blank template with the default Archicad library.
Model something simple and save that to see what happens.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10