Cant play Dungeon defenders

[Thore]

i try to play dungeon defenders and when i click "start" the game lunches. then it goes to this purple with blue circles screen and exits. help please

[Dioxido]

www.google.com, you're wellcome

[[TrendyEnt] Kim]

Please email your DxDiag to [e-mail]. This allows us to see what hardware you're running and some additional details about your computer that may assist us.

Start -> Run -> type dxdiag and hit enter
or
Start -> type dxdiag and hit enter

Then click save all information and it'll put it into a DxDiag.txt file.

[Thore]

oh thank you,but i found out that my PC is the problem :/