Hello once again,
Just added that extra capacitor and it does exactly the same thing! BSOD when i try to run a basic app like firefox or do a WEI or even play a game. Afterwards i tested the system with a HD 4770 and everything worked perfect.
The new 3870x2 with the capacitor works fine,i mean no video errors on screen, and did try pretty much any software trick i could find. If anyone has an idea about this ..feel free to share it ! Thanks