When the computer starts up, an icon with a red X through it appears on the screen. See Figure 1.
Figure 1 ATI driver not loaded
Solution
There is nothing wrong; the computer is functioning normally.
The video card driver software for two different video cards--NVIDIA and ATI--are installed in the System Folder of Power Mac G4 (Digital Audio) and Power Mac G4 Cube computers. When the computer is turned on, it detects which card is installed and loads its driver software. If the ATI driver software is not needed, an icon with a red X through it appears at system startup time. If the NVIDIA driver software is not needed, its icon does not appear. Each of these behaviors is normal.
If the computer does not have an ATI video card, and you do not want to see its icon during startup, use the Extensions Manager control panel to turn off the ATI Graphics Accelerator extension.