lol... your computer's Specifications. The CPU (Processor), RAM (System Memory), GPU (Graphics Processing Unit / Video Card) and the resolution you normally run the games at (such as 1680 x 1050, 1280 x 1020) We need all that info to better assist you with your problem, since we can't magically know all that.
I assume you do not meet the System Requirements for the games, since you want to use 3D Analyzer?
~Des