After downloading ArmA 3 beta on steam, I was unable to fully open the game. The start-up screen with ArmA 3 in large letters would popup, saying it was downloading add-on's, and then the error: "Display Driver Intel Graphics Accelerator for Windows 8(R) stopped responding and has successful recovered". After opening ArmA 3 the first time, trying to open it subsequently I get the error: "Failed to start game: app already running". When I look at the task manager, ArmA 3 was listed as a background process, not as an application. I have used steam to "Verify Integrity of Game Cache", and subsequently re-downloaded the game. I am using a Windows 8 (64 bit) HP Pavilion slimline with Directx 11, a "Intel Pentium CPU 2020 @ 2.9 GHz (2CPUs)", a "Intel HD graphics 2500".