DisplayPort No Signal Windows 11 Fix [2026]

Quick Answer: DisplayPort no signal due to cable issue or GPU detection. Unplug and replug cable, or use different DP port on GPU.

Fix

Unplug DisplayPort, wait 10 seconds, plug back in firmly

Use different DisplayPort on graphics card

Device Manager → Display adapters → Update driver

Use DP 1.2+ cable for high refresh rates

Againly can inspect the relevant local evidence and propose a fix plan for review.

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Evidence-led support

Againly checks the local evidence and shows you a proposed plan before making changes.

Diagnosis-first coverage: executable changes are offered only when this PC's evidence and available capabilities support them.

Works on Windows 10 & 11 · No credit card required