Debug a display that appears to be malfunctioning

Let’s help you diagnose and resolve some common display hardware issues.

Before we start

• Unplug power before reseating cables where possible. Avoid damaged cords and bent pins.

• Have on hand a known‑good: power cable (Euro cable), a short USB‑C cable with DisplayPort Alt Mode support, a HDMI 2.1 cable, an Ethernet cable, and access to the display settings.

• Document what you try: which port, which cable, and observed results. If you still need help, this will help us get you what you need faster.

First try this

• Restart the Device: A simple restart can often resolve temporary glitches.

• Update Firmware and Software: Always ensure your device is running the latest firmware and that all relevant applications are updated.

Then, what to try

Look through the symptom list below and start at the symptom that best matches your situation. Follow the steps in order. If an earlier step resolves the issue, you can stop there.