Repeatedly leaving or disconnections in Heroes of the Storm results in a leaver penalty or lost of ranking.

Instructions on lowering the maximum frame rate.

How to reset the World of Warcraft User Interface

You might be in a raid group! We also have some other steps to fix this issue.

Call of Duty: Modern Warfare II 秘蔵版のオペレーターパックに関する情報

BattleTagやReal IDのフレンドを追加する際のトラブルシューティング