Do you have a different optical drive you can try the DVD in? Apparently Securom can be picky about which drive it will accept if there are more than one, and I've seen people recommend the lowest drive letter one.
Do you have access to a different computer you can install the game on, at least to check if you can get past that point? If the same thing happens on 2 different computers, then there may be a problem with the disk itself, in which case exchanging it should help.
Did you check
Securom's site?
First Aid : when Div2 does not start or crashes
