If your LG TV shows an Unsupported Mode message while connected to a PC, the PC is usually sending a resolution or refresh rate the TV cannot display, or the PC graphics driver is not outputting a compatible signal. Set the PC to a supported display mode and, if needed, change the setting from Windows Safe Mode.
This message typically appears when the PC outputs a resolution or refresh rate that the LG TV does not support on that input, or when the graphics card driver is not working correctly and sends an invalid signal.
If the PC is set to a display mode the TV cannot handle (for example, an unsupported resolution or refresh rate), the TV may show Unsupported Mode instead of the desktop.
If the graphics driver is outdated, corrupted, or misconfigured, the PC may output an invalid mode even if the TV supports the intended resolution.
1) On the PC, right-click an empty area of the desktop.
2) Select Display settings.
3) In Display resolution, choose the Recommended option.
4) Confirm the change.
Tip: If the TV shows Unsupported Mode and you cannot see the desktop, proceed to the Safe Mode steps below and then return to Display settings to select a recommended resolution.
1) On the PC, right-click an empty area of the desktop.
2) Select Screen resolution (or Display settings, depending on your Windows 7 configuration).
3) Set the resolution to the Recommended option.
4) Apply the change.
Use Safe Mode to load a basic video driver so you can restore a compatible resolution.
If Windows still boots normally:
1) Hold the Shift key and select Restart.
2) On Choose an option, select Troubleshoot.
3) Open Advanced options, then Startup Settings, then select Restart.
4) After restart, select Safe Mode.
5) Once in Safe Mode, open Display settings and set Display resolution to the Recommended option.
If Windows does not boot normally:
- If Windows detects multiple abnormal shutdowns, it may automatically enter recovery and allow Safe Mode.
- If it does not, power on the PC and then press and hold the power button to force shutdown during startup. Repeat until Windows Recovery appears, then follow the steps above to enter Safe Mode.
How to confirm Safe Mode:
- The desktop may show a black background and the words Safe Mode in the corners.
If the steps above did not resolve your issue, please visit the LG Electronics Support website. You can chat with our virtual assistant or schedule a service repair for further assistance.
※ Please note that service fees may apply for engineer visits if your product is out of warranty.
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