Your chipset driver is older than is recommended.

Troubleshooting outdated device drivers following a WoW patch

Information on error BLZOWCLI00000004.

We have detected that your video driver may be incompatible with [game_name].

Out-of-date drivers and operating systems can cause a variety of issues, and are one of the first things to check when a game is having problems.

How to reset video card settings.

We have detected that your video driver may be not compatible with [game_name].

We have detected that your video driver may be incompatible with some older video cards when playing [game_name].

We have detected that your video driver may be out of date which may cause performance issues when playing [game_name].

Minimum system requirements for Warcraft III increased with patch 1.31