I just got back to Windows 7 Ultimate from Windows 8.
I instantly downloaded World of Warcraft and League of Legends, and i have problems opening both.
When i open League of Legends i get the message: could not load direct3d.
And when i open World of Warcraft i get the message: Failed to find a suitable display device. Exiting program.
I guess its some problem with the graphic card atleast.
DxDiag: dxdiag - Pastebin.com