hi i have p4 3.00 ghz with 915 gav m.b 512 ram 128 vedio ram . the system was bought recently the problem is many games like crazy taxy 3 , painkillers , dues ex invisible war, etc games does not run at all . i have direct x 9 .c . the game quits as soon as it starts. tony hawk pro sk8er 4 works properly but other games does not work. the system is looot better than the min requirments. still the game does not work why?