Computer Graphics Display Output: display output selection. The desktop is sent to a disabled or different display output.

The distinguishing clue

One connected screen is blank while another active display shows the desktop.

Checks before an assessment

Record the affected display, port, resolution and refresh rate. Compare a known cable and display if the connectors are sound; stop load tests if excessive heat accompanies artefacts.

Stop point: Stop high-load testing if artefacts are accompanied by excessive heat or burning smell.

Workshop confirmation and repair

Device-level check: Compare another cable and display, inspect temperatures and separate software from hardware rendering.

Targeted check: Compare display mode, selected input and supported output configuration. If confirmed: Restore the intended display configuration.

Repair boundary: Repair driver state or the confirmed graphics card, connector or board path.

Related cause to rule out

When video works during startup but fails after the graphics driver loads or changes, also consider Computer Graphics Display Output: graphics driver conflict before choosing a repair.

Checks after the work

After repair or replacement, check native resolution, multiple outputs, video playback, graphics load and restart.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.