Nvidea driver problam

A friend had this Medion laptop about 4 years old.
It has onboard graphics
Nvidea GeForce 9300m G
It worked well for 4 years with vista, then the graphics went crazy, just a jumble of colors on the screen. It would still load safe mode.
We installed win 7 premium.
The laptop went well for 3 months then the grahics went the same as before, jumbles up colors.
I started in safe and uninstalled the graphic drivers.
It seems to be running ok is standard VGA drivers.
What concerns me is that when the nvidea driver is installed it's graphics will go crazy again.
Is there an alternative to useing the nvidea drivers?
Can i use microsoft drivers?

Did you try the drivers from Median? Usually for laptops because their video graphics is a mobile device, one uses the drivers from the manufacturer of the laptop, not from Nvidia.

Medion drivers are for vista only.
This problam started when visat was installed

Only use drivers designed specifically for the exact hardware device and Operating System.