Monitor flickers at 144Hz NVIDIA

Symptoms

• Monitor flickers or goes black at high refresh rates
• Flickering disappears at 60Hz
• Issue began after driver or Windows update
• Affects gaming or high-refresh monitors

Why This Happens

High refresh rates stress both the GPU output and the display cable. Even minor signal instability can cause flicker at 144Hz that is not visible at lower refresh rates. Common causes include: - Marginal DisplayPort or HDMI cables - Driver bugs related to G-SYNC or VRR - Monitor firmware issues - GPU output instability

Step-by-Step Troubleshooting

Step 1: Lower Refresh Rate Temporarily

• Set refresh rate to 120Hz.
• Test stability.

Step 2: Replace the Display Cable

Use a certified DisplayPort cable rated for high bandwidth.

Step 3: Disable G-SYNC or VRR

• Open NVIDIA Control Panel.
• Disable G-SYNC.
• Test for flickering.

Step 4: Update GPU Drivers

• Install the latest NVIDIA driver.
• Use clean installation if necessary.

Step 5: Check Monitor Firmware

Some monitors require firmware updates for high refresh stability.

When This Topic Is Limited

If cable replacement and driver changes fail, the issue may be a hardware limitation of the monitor.

Summary

Monitor flickering at 144Hz is usually caused by signal instability. Cable quality and driver configuration resolve most cases.