My Stubborn Graphics..Driver help

Okay, i must have posted many threads..but still no help..

I have tried installing video drivers from laptopvideo2go...these drivers...163.69,163.75, 165.01, also 169.09....


On the site it says 6100 is compatible

whenever i install a driver other than factory (98.15) the Vista won't load...computer screen goes blank just after boot screen...
I have tried Driver cleaner, entering safe mode...read all articles on the internet...

I will really be glad if this problem can be solved by someone.

I really am noticing lot of problems with factory drivers...i can't even change vibrance, colours, etc with the factory drivers...



This issue is bugging me for past 2 months..if someone can help me i ll be very thankful to him. You can see my signature for specs.

 

A note: 163.69 had worked for a week ...it was great but i made the mistake of installing 163.75...now no drivers install including 163.69...


Is it WHQL problem? is it just a matter of certificate?

 

i think like before no one can help again....many other 6 series users are having this problem.