Weird fuzzy graphics

Ok so im playing the game, everythings normal when all of a sudden the screen goes fuzzy.

So I go and download the latest driver and evrything works fine.

However, a few hours later the same problem happened.

Does anyone know how i can fix this?

here is the screenshot of how the screen looks like.

Is your power supply good enough to support everything?

In other words, have you upgraded anything of your hardware to the point you don't have enough wattage from your PSU?

Once again...Good Point! Also check to see if there is an extra little power cable for the Video Card. (I can't remember the name of that cable...looks kinda like a CD player to Sound Card cable.)

What graphics card do you have?

+ Try rolling back your graphics card driver 1 version back.

its a Geforce 6600 that i just got
i cant roll back to older graphics card because i lost everything to install it with