Final veredict

Hi guys.
I bought my k770i 3 days ago and, Im very insatisfied with the Video quality!
Its realllyyy bad, however, the camera take nice photos, with good quality (I cant complain).
I`ve been looking through these forums on the internet and what I have noticed is that these drivers are always crashing or something like this.
Example: it improves the quality of my camera, but I cant save anymore.
Well, what I would like to know is:
Is there a driver that wouldnt crash my K770i????
Could you guys help me? Is it worth to try to install a new driver???
Thank you very much.