Many games crash on startup

[DragonRider]

Im using Windows XP SP3. Usualy I have no problems with games. But my PC needed reinstall at one point. I got a Win XP install disk from a friand and reinstalled it.I istalled all the needed drivers(motherboard, video...) I also installed programs like DirectX 9, Microsoft Visual, Net framework 4.0. And maybe some other.

But then...
>insert game name here< has encountered an error and it needs to close

So far this happened to: Freelancer (Disco runs fire), NFS Most Wanted, Galaxy on fire 2 and some others (i forgot their names).

I get this message on games that I have played before woth no problems at all. But now after my reinstall.

Could I have missed some driver/program/setting? Becouse I know the games need stuff like DirectX to run.

Thank you in advance.