Well, I did everything and nothing works. Even on the step 4, I have the same problem of newfrank, the Uplay ask for the game key, I get on Steam but tells me its invalid. My configuration is CPU: AMD Bulldozer 4100, GPU: ATI Radeon HD 6870, 8Gb memory DDR 3, Motherboard: Asus M5A78L LE. All my drivers are up to date, if you want I can post my DxDiag here. I tryed with DX11 and DX9, aways same problem, blacks screen and the game stops working on Task Manager. Sometimes with DX9 tha game doesnt crash, but my GPU stops working, the black screen came and than get back to the game, this thing happens every few seconds. Thx man, hope you can help me.


