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4K/120hz

Known issue: If you're using a 4K@120Hz TV that also supports VRR you might encounter no signal or a corrupted image when the Xbox is configured for 4K120+VRR. This issue occurs with various TVs from LG, Samsung, or Vizio.

Workaround:
Update to the latest firmware on your TV
-If using an LG TV: https://www.lg.com/us/support/software-firmware-drivers
For further assistance on setting up your LG TV to get the most out of your Xbox Series X|S, go to the LG troubleshooting/support guide.
- If using a Samsung TV: https://www.samsung.com/us/support/downloads/
- If using a Vizio TV: https://support.vizio.com/s/firmware-search
For further assistance on setting up your Vizio TV to get the most out of your Xbox Series X|S, go to the Vizio support FAQ.

Note: To best ensure that you always have the latest firmware update for your TV, confirm that you TV is connected to the internet and that automatic updates are enabled.

If the issue persists, also consider trying the following:
- Configure the console for 4K/60 with VRR by going to Settings> General > TV & display options > Video Modes. Check the box for Allow variable refresh rate.
- Configure the console for 4K/120 with no VRR by going to Settings > General > TV & display options > Video Modes. Uncheck the box for Allow variable refresh rate. The resolution and refresh rates are found under Display in TV & Display options.
- If you wish to experience 120hz and VRR, configure for 1080p/120hz VRR or 1440p/120hz VRR by going to Settings > General > TV & display options > Video Modes. Check the box for Allow variable refresh rate. The resolution and refresh rates are found under Display in TV & Display options.

If you're experiencing a corrupted image, try these workarounds to revert back to a safe video mode:
- Restart your console and configure your video modes to one of the options listed above.
- If you're still experiencing a corrupted image after restart, disable VRR on the TV. Consult your TV manufacture's manual on how to do this.
- If the issue still persists after steps 1 and 2, perform the video mode reset sequence to get back to a safe state and configure for one of the two options above. To do this, follow these steps under Your screen is blank after you turn on the console > Reset your display settings.
Known Issues on Xbox Series X|S - Microsoft Community