1) Power on but no picture
2) Wrong or abnormal colors
3) The text and icon look blurry
4) Display position is incorrect / a black bar in the middle of the screen
5) Speakers have no sound
6) Residue image
7) Out of Range

1) Power on but no picture
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Make sure the VGA cable is tightly connected from the video output connector on the video card to the video input connector on the monitor.
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Make sure you are using the standard power adapter coming with the monitor.
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Check your video card if the driver is correctly installed. If there is no video signal from the video card, “NO INPUT SIGNAL” will show on the screen.

2) Wrong or abnormal colors
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If any color (red, green, or blue) is missing, check video cable to make sure it is securely connected. Loose pins in the cable connector can cause a bad connection.

3) The text and icon look blurry
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LCD monitor has a native resolution which pixels are produced by cells in fixed positions. When a resolution different from the native resolution is chosen, the LCD monitor uses various interpolation methods to achieve the pseudo resolution. To achieve the optimum viewing quality, choose the native resolution of the panel is recommended.
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Use “Auto Tuning” function to adjust image quality on the OSD menu or you can hold button 2 for 3 seconds to do auto tuning.

4) Display position is incorrect / a black bar in the middle of the screen
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Use “Auto Tuning” function to adjust image position on the OSD menu or you can hold button 2 for 3 seconds to do auto tuning.

5) Speakers have no sound
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Make sure the audio cable is tightly connected from the audio output jack on the PC to the audio input jack on the monitor.

6) Residue image
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If an image remains on the screen for an extended period of time, it may be imprinted in the screen and leave a residue image. It is characteristic of liquid crystal and is not malfunction or deterioration of the liquid crystal. The residue image will disappear after a period of time. It is recommended to set up the screen saver for your LCD monitor.

7) Out of Range
The first thing you need to check is the screen resolution. Usually “Out of Range” is caused by improper resolution setting. You can recover the proper screen resolution as the following steps for Windows: (Assumed that the optimal resolution and frequency setting is 1024x768@ 60Hz.)
Boot the computer into VGA Mode (F8) [repeatedly] at startup.
Go to Control Panel, double click Display, click SETTINGS, and then click ADVANCED.
Click Adapter, click List All Modes and change the screen resolution to 1024x768. (You can select 16 bit or 32 bit color which depends on your video card capability.)
Select 1024 by 768, High Color (16 bit), Default Refresh
Click OK and APPLY.
After clicking APPLY, a message will be displayed “Your desktop has been reconfigured. Do you want to keep these settings?”
Click Yes and OK. Then click OK on the Display Properties window.
Restart your PC
After you restart the computer, go back to List All Modes to adjust your screen refresh rate to 60 Hertz.
  The “Out of Range” may happen if you switch monitor A to monitor B for your PC. Whenever you change the monitor for your PC, your PC may detect it as a new hardware and automatically install a proper driver for the monitor. So, you will have both monitor A and monitor B drivers on your PC. Sometimes the two monitor drivers may conflict each other and cause “Out of Range”. You can resolve “Out of Range” by uninstalling both monitor drivers and reboot your PC. The Windows XP will automatically detect the new hardware and install a proper driver for the monitor. Here is a quick way to uninstall the monitor drivers:
 
1.
Right-click My Computer, select Properties and then click Hardware.
2.
Click Device Manager, select Monitor and click on “+” in front of “Monitor”. Then you can see one of the monitor drivers called “Plug and Play Monitor”. A quick way is to uninstall all the monitor drivers and then let Windows automatically detect the new hardware. (Right click on the monitor driver and select “Uninstall”).
3.
Restart your computer.
 
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