LG TV - Troubleshooting Poor Video Quality When Connected to a PC

At a Glance

• You may have set the display resolution and external inputs improperly.
• The HDMI cable connection between the TV and the external PC may not be in good condition

Try this

Changing PC resolution (Windows 10)

Right-click on the Desktop, select Display settings, and change the resolution in Display resolution.
Please select the recommended resolution in Display settings.
If the screen problem persists with the new resolution, change the external input settings.

Changing PC resolution (Windows 7 or higher)

If the resolution setting is incorrect when the TV is connected to a PC, it may result in symptoms like screen cut-off and enlarged screen.
In this case, set the optimal resolution by consulting the TV user manual.
Right-click on the Desktop, select Screen resolution, and change the display resolution.

Changing external input settings [for products released in 2018 or earlier only]

1. Turn on the TV and press the [External Input] button on your TV remote.

2. Select [All Inputs].

3. Under [All Inputs], select [Edit Icon].

4. Under [Edit Icon], set HDMI to PC.

Does the problem persist even after the resolution or external input is changed?

➔ Try replacing the HDMI cable.

Checking the HDMI cable

It is recommended to use an authentic HDMI cable to connect your TV with a PC.
Using a non-certified HDMI cable may lead to communication errors, resulting in symptoms like a jittery screen and shaking screen.
Authentic HDMI cables are labeled or engraved with the "High-Speed HDMI" mark. Otherwise, the cable is likely not certified. In this case, replace the HDMI cable with an authentic one.

Check if your HDMI cable has the “High-Speed HDMI” label or engraving (HDMI 2.0 or higher version is recommended).

This guide was created for all models, so the images or content may be different from your product.