Hey! suddenly ive started getting theese white dots, where my screen just turn black after a couple of second where i have to turn off my computer in order to get a clean screen. I have tried to remove the dust, different cables to the Graphic card. Im currently using a Amd radon 6950 1gb. May there have something to be With the MHz in the catacalyst controll center? Please do help me. I do not any kind of idea what this is 
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