nope to both remarks i meet all requirements even to play C O D 5 and Steam games. xp pro spk2. w/o anti-virus/ anti-spyware running.
what hacks were you running before? If you use some of the old hacks with a new bypass you will screw up CA. Not all versions have this problem, but some do.
If you did use an old hack, like say TNT or older and you were playing one time and they get detected CA knows you are hacking and it makes you not able to play, and it will just lock up CA.
So, I would say uninstall CA, then re-install. (sucks i know)
then i would say run gamebooster while playing after the new install see if that works for you.
If not reply back.