What is HDMI-NO-SIGNAL?
Monitor reports No Signal via HDMI is a medium-severity graphics card (GPU) issue. The screen is black and shows 'No Signal' even though the PC is on and the cable is connected. This can also stem from the GPU is not fully seated in the PCIe slot. Use the steps below to track down and fix the cause.
Common Causes
- Cable plugged into HDMI port on motherboard (iGPU) instead of GPU
- Defective HDMI cable or incorrectly inserted connector
- The GPU is not fully seated in the PCIe slot
Step-by-Step Fix Guide
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1
Plug the cable into the HDMI/DP port directly on the graphics card
Begin with Plug the cable into the HDMI/DP port directly on the graphics card; it's the step that resolves HDMI-NO-SIGNAL for the largest share of reported cases.
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2
Try a different cable or monitor input
Persistent cases usually stem from less common gpu instability factors, which the following steps are built to catch.
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3
Check that the GPU has clicked into place in the PCIe slot
"Check that the GPU has clicked into place in the PCIe slot" targets cable plugged into HDMI port on motherboard (iGPU) instead of GPU, one of the documented causes of HDMI-NO-SIGNAL.
Commands & Diagnostics
devmgmt.msc
Frequently Asked Questions
The leading cause of HDMI-NO-SIGNAL is cable plugged into HDMI port on motherboard (iGPU) instead of GPU, though defective HDMI cable or incorrectly inserted connector and the GPU is not fully seated in the PCIe slot also show up in our reports.
The fastest fix is "Plug the cable into the HDMI/DP port directly on the graphics card". Only move on to the later steps if HDMI-NO-SIGNAL keeps coming back.
As a medium-severity issue, HDMI-NO-SIGNAL is more of a stability annoyance than a hardware risk — the steps above should clear it up.
Usually. HDMI-NO-SIGNAL is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
Yes — GPU or memory overclocking is one of the most frequent triggers for HDMI-NO-SIGNAL. Try resetting your GPU to stock clocks using MSI Afterburner or your OC software, then test for stability before investigating other causes.
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