Ok i know a laptop Acer Aspire 8983g which comes with either windows 7 or vista OS. The main problem is that it comes only with Nvidia Geforce 9600M GT which is an unstable graphics card...In order to make it stable i have to launch empowering technology and make the graphics card power mode High not maximum...Now i now longer get random black screens when i play games and have to restart my laptop with a risk of crashing my hard drive...However this created another problem. Now i play with 30 fps instead of 80 fps. How to i under-lock my graphics card so i can put it on maximum graphic power mode and play normally?