Plz post clearly (takin sum time out from ur busy schedule
) and tell us exactly wat r the games that u r trying to install on ur system and the version of direct-x and motherboard drivers that u hv on ur system.
I hope the games that u r installing r not RESOURCE AND GRAPHICS loaded games like DOOM-III,NFS-U2 etc. wich ur system doesnt supports coz u really dont hv a powerful system Bro !
Maybe the game that u r trying to install does not satisfy the minimum requirements (forget abt the recommended requirements dude) so plz see the game require
But,try installing and updating the video drivers,direct-X versions(direct-x 9.0 or above),Motherboard drivers......
And if u hv a RAM problem (like a RAM module not responding or not showing up in the BIOS) then u can clean the part of the RAM module (wich u insert in the Slot) with help of a pencil eraser by rubbing it slowly and also clean the RAM slot with help of a soft brush,insert ur RAM again and see the results...
do post ur results to help u better........
cheers n e-peace......