With all problems, check out The home of Spybot-S&D! for Spyware scanning, and avast! antivirus software - computer virus, worm and Trojan protection by ALWIL Software for AntiVirus. It can also be that you don't reach the Minimal SYSTEM REQUIREMENTS of WoW. It may also be your Video Drivers aren't updated. Remember, Windows Update is actually important, and I suggest getting all the updates at Microsoft Windows Update. Also, post your System Spec.'s.