dowloaded?, corrupt download maybe?, do you have the dongle (usb key) that allows it to run?, try the standard demos, if they work then the issue is something like the download being corrupted, (you did go offline and shut down the the av after scanning the file before install?), or maybe you have a virus on the system that has got onto the laptop, this is the fifth system I have had DB on, and both the classic and Pro versions work fine on all of them with up to date drivers, (some have had several video cards too, from voodoo to Gforce FX ultra to radeon 9800 pro), I would say you have a corrupt install, did you install over the demo or something without removing it first?, DB nearly always works unless (because of it`s heavy dependence on directx) the video cards provide no or poor acceleration, then you either get screen issues or sluglike framerates, DB works for thousands of users, there will be a fix , what do the school machines run as the OS and what are the video cards BTW?, like I say DB depends heavily on hardware acceleration (there is no software path) so you need a decent setup just to run text apps, cheers.
Mentor.
System spec : Pentium 3.0Ghz, 512MB DDR, 2x160Gb HD (using icewave hd coolers ), DVD RW/CD RW (all modes), multimedia front panel, 6 way surround sound, ATI radeon 9800Pro 128mb.
