These errors can be caused by temporary server issues in a specific region.

Troubleshooting steps to resolve error message in World of Warcraft.

Diablo III Supported Video Cards 

Troubleshooting steps for error "Game Initialization Failed" when launching a game

Troubleshooting steps for Diablo III console connection problems.

Troubleshooting steps to resolve Diablo III console crashes. 

Trying to load the game returns error "Direct3D failed to initialize"

Troubleshooting steps to resolve performance problems in Diablo III.

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This article explains the process of speaking to a Game Master (GM).