The information in this article applies to the following configuration(s):

• Quake 4
• Catalyst Display Driver 7.4
• Radeonâ„¢ X1950 series
• Radeonâ„¢ X1900 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
When trying to play Quake 4 in Windows Vista with a Radeon X1900 or X1950 Series graphics cards on a Intel 975 XBX based motherboard, users may experience crashes or hangs shortly after starting a level.