BSOD while playing dota 2

[kyle004]

i've been experience BSOD while playing dota 2 after changing a new videocard. i experience 1 BSOD per 1-2 games at first. but now it's like 2 BSOD per game. i think it's increasing as time passes by. need help please. thankyou.

edit: only happens when i play dota 2.

 

[kyle004]

help please

 

[koolkat77]

There seems to be a problem with your Windows activation. Please post this report:

• :note:Activation Issue Posting Instructions