Patent ID: 8558839

Claim:
A method for displaying critical system screens on a display device of a computer system that includes multiple graphics processing units, comprising: configuring only a first graphics processing unit of the multiple graphics processing units as a video graphics array (VGA) boot device, wherein the multiple graphics processing units are selectively connectable to the display device via a display multiplexor; receiving a notification that a critical system event has occurred; calling to a system basic input/output system (BIOS) interface from a video BIOS to determine which graphics processing unit is providing image data to the display device in response to receiving the notification; calling to the system BIOS interface to configure the display multiplexor to provide image data from the first graphics processing unit to the display device in response to determining that the first graphics processing unit is not providing image data to the display device; and outputting the critical system screen to the display device of the computer system through the first graphics processing unit.