@Astafas
I guess it is not the case - 12G is more than enough. It's ~1.2G for CD2-4 and ~2,5G total (without saved games) on my PC.
@TheSjon
Anyway, IIRC, there should be check during installation if computer suits the game requirements, and i guess it even never comes so far, does it, TheSjon?
Requirements specify DirectX 7.0 or higher, it might be the cause. There is DirectX 7 installation on my 1st CD, though. Also at least 4M videRAM is requested and CDROM should be at least 4x (minimal requirements).
As far regarding laptops, some of them require specific display drivers, too, their behavior sometimes is not the same as of desktops.
There might be also there is some policies set by former user, it's worth to check it out. For first thing you might check if there is any name under \Windows\Profiles, i.e. if there is individualized settings for users. If there is only your account there it might happen also you just do not see other, what may indicate some security measures provided before.
The best way, of course, would be to ask some computer worm to take a look, i doubt there is nobody around
But the very first thing you should do is to check if your CD drive understands your CDs completely. The only way to ensure is to make temporary folder (in terms it may be safely removed afterwards) and by windows explorer copy one by one contents of every CD there. If there are errors it'd be the root of problem.