Graphics error with GeForce 8600M GT & 9600M GT : MacBook Pro

Hi

It awakens on my Mac, and it welcomed me with such a picture (all rectangles are in motion). And it is not that it would be an isolated case, I had recently been a few times times, the screen is no longer on, sometimes he goes on with so graphic errors, sometimes everything goes perfectly. I have no desire at this gambling .
Previously (with Tiger) so I did not have problems!
The Mac is 25 seconds in high mileage.
After I have upgraded to OS X Tiger, it is getting worse with the spinners , The Mac now needs a good 1:30 min to boot.
Is it possible that a new installation helps (even if I use this Windows Scheiß've really tired ) Or is there another measure that my Mac to help bail out?
Thanks for constructive assistance

What Hardware error you are getting . Please submit here.

Sure?

Unfortunately, it happened before the expected few days of warranty.

Hello,

Exactly the same for me: After restarting nem is everything, as if nothing had. This problem is more than annoying, since it is impossible for me so well, nor any documents or other security. I was actually far more accustomed to me on my Mac blind to be able to leave. Now, my Mac always something unsafe, unreliable and I've always been a bad feeling, my Mac to sleep to send. Unreliability was also the reason why I am the Windows World "back to back have .
I will probably be me an external hard drive to buy on my internal gemirrort and then I will do everything in my PC every month decency: My new computer setup. I live in the moment, in the hope that all the music that makes my Mac, from an upgrade to Leopard workstation came.