LG UltraGear 27GN800P-B

Questions and Answers

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joneselizabethJul 29, 2025
What to do if nothing is displayed on my LG UltraGear 27GN800P-B Monitor screen?
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  Jessica CohenJul 29, 2025
  If nothing is displayed on your LG Monitor screen, try these steps: First, ensure the power cord is correctly plugged into the power outlet and the power cable is properly connected; then press the power button. Make sure the connected input is enabled by going to Menu > Input. If the monitor is in sleep mode, move the mouse or press any key. Also, verify that your computer is turned on. Check the signal cable between the PC and the monitor and reconnect it if necessary. If the issue persists, ensure you install the display driver from the LG website (http://www.lg.com) and confirm that your graphics card supports Plug and Play.
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Jessica PhillipsAug 3, 2025
How to fix unstable and shaky screen display on LG UltraGear 27GN800P-B Monitor?
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  Megan HartAug 3, 2025
  If your LG Monitor's screen display is unstable and shaky, or if images leave shadow trails, it might be due to the selected resolution. If you're using HDMI 1080i 60/50 Hz (interlaced), the screen may flicker. Try changing the resolution to 1080p or the recommended resolution.
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Erik SchultzAug 8, 2025
What to do if there is no sound from the headphone port on my LG UltraGear 27GN800P-B?
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  dorothy27Aug 8, 2025
  If there is no sound from the headphone port on your LG Monitor, first, ensure that the headphone connections are properly made. Next, try increasing the volume using the joystick. Finally, set the audio output of your PC to the monitor you are using by going to Control Panel > Hardware and Sound > Sound on Microsoft Windows and setting the Monitor as the default device.
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Lisa HodgesAug 13, 2025
What to do if some features are disabled on my LG Monitor?
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  Dr. Brandon Day DDSAug 13, 2025
  If some features are disabled on your LG Monitor, the OSD might be locked. To unlock it, go to Menu > General and set OSD Lock to Off.
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charleszimmermanAug 18, 2025
Why does the screen retain an image on my LG UltraGear 27GN800P-B?
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  johnsonkurtAug 18, 2025
  Displaying a still image for a prolonged time may cause damage to the screen of your LG Monitor. To extend the lifetime of the monitor, use a screensaver.
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Matthew SanchezAug 22, 2025
Why is the display color abnormal on my LG UltraGear 27GN800P-B?
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  Dakota RobinsonAug 22, 2025
  If the display color on your LG Monitor is abnormal, first set the color to 24 bit (true color) or higher by navigating to Control Panel > Display > Menu > Color Quality in Windows. Also, check if the signal cable is connected properly; try reconnecting it or reinserting the PC's graphics card. Note that pixilated spots (red, green, blue, white, or black) may appear, which is normal and not related to the monitor's performance.

Summary

ASSEMBLING AND PREPARING

Product and Button Description

How to Use the Joystick Button

Explains the functions and operations of the monitor's joystick control.

Moving and Lifting the Monitor

Adjusting the Angle

USING THE MONITOR

Connecting to a PC

Explains how to connect the monitor to a computer via various interfaces.

HDMI Connection

DisplayPort Connection

Upgrading the Software via USB

USER SETTINGS

Activating the Main Menu

Main Menu Features

Details the various options and functionalities accessible from the main menu.

Menu Settings

Guides users through adjusting specific display and system settings.

Game Mode

Lists and explains various gaming modes for optimized performance.

Game Adjust

Covers specific game-related adjustments like motion blur and response time.

Picture Adjust

Details how to fine-tune visual elements like brightness, contrast, and color.

Input

Explains selection of input sources and aspect ratio adjustments.

General

Covers system-wide settings including language, power management, and OSD lock.

TROUBLESHOOTING

Nothing is displayed on the screen.

Steps to diagnose and resolve blank screen or no display issues.

Some features are disabled.

The screen retains an image.

Screen display is unstable and shaky.

The display color is abnormal.

No sound from the headphone port.

PRODUCT SPECIFICATION

LG UltraGear 27GN800P-B Specifications

General

Screen Size	27 inches
Resolution	2560 x 1440 (QHD)
Panel Type	IPS
Refresh Rate	144 Hz
Response Time	1 ms (GTG)
HDR	HDR10
Aspect Ratio	16:9
Contrast Ratio	1000:1
Color Gamut	sRGB 99%
Viewing Angle	178° (H) / 178° (V)
Connectivity	2 x HDMI, 1 x DisplayPort, 1 x Headphone Out
VESA Mount Compatible	Yes
Adaptive Sync	NVIDIA G-SYNC Compatible
Brightness	350 cd/m²