Running games forces reboot

[rosswale17]

Every time I open up a game, it starts loading, then restarts my computer. I thought it was just World of Warcraft glitching, but it does it for my other games too. This only started after i replaced my old hard drive and reinstalled windows. Why would this be happening?

 

[almcneil]

You need to make sure you have all your updates, including DirectX. Go to the following two Microsoft web sites and check for all updates: Microsoft Windows Updates and DirectX Updates.