Samsung Monitor Blinking Blue Light (Cause and Solution)

Are you wondering why your Samsung monitor has a blinking blue light? Then you’ve come to the right place. In this article, we will lay out what it means when your Samsung monitor starts to prompt a blinking blue light as well as how to fix it.

There are a number of issues that can cause any Samsung monitor to have a blinking blue light. In some models, this issue is caused by a built-in feature while in others, it’s an indicator of a pending problem that prevents the monitor to function properly. In this case, we will list out all the common ones and how to fix them.

With that in mind, this article will help you diagnose what causes your Samsung blinking blue light issue.

1. Power Saving Mode (Standby Mode)

Cause: Power Saving Mode, also known as Standby Mode, is a common feature found in monitors that automatically switches off the monitor to reduce power consumption. This feature gets triggered either when your monitor has not been used for a set amount of time or is turned off.

Furthermore, this feature helps in preventing an issue widely known as “screen burn” that occurs when an image is static on display for a long period of time.

Solution: In some Samsung monitor models, you can open the built-in menu to disable the LED from blinking. This way, you won’t be bothered by its feature indicator.

2. Cable Connection Issue

Cause: If it’s not Power Saving Mode, then the first thing you will want to check is the display cable. It’s the cable that connects the monitor to a source.

Oftentimes, Samsung monitors continuously blink blue light since it isn’t detecting any signal from a source even after you turn on your desktop computer.

This display cable could be an HDMI cable, a DisplayPort cable, or even a VGA cable that is causing the issue.

Solution: Display cables can get damaged over time due to wear and tear from heavy use, cable coiling, and even simple bending.

You can easily replace them if you have extra cables lying around, or you may need to purchase them from your nearest electronics store.

3. Hardware Issue

Cause: After replacing your monitor’s display cable and the blinking blue light issue still persists, the next thing you’ll want to check is the source.

This is the device that you are using such as your desktop computer, laptop, or even mobile device that has a monitor output feature.

Solution: For your desktop computer and laptop that’s connected to your Samsung monitor, you will want to check first if it’s turning on properly.

A light indicator on your CPU followed by a single, short beep is usually a good sign that your computer isn’t suffering from any known issues related to display output and it’s booting up normally.

If this happens and there’s still no display coming from your Samsung monitor and its blue light continuously blinks, you can check another monitor to isolate the issue and determine which end is causing the problem.

Laptops on the other hand already have their displays switched on once you power up your laptop. In this regard, laptops with a display port to output to external displays automatically extend the screen for more screen space.

For Windows laptops, you can go to Display Settings by right-clicking on an empty part of the screen and choosing that option. Navigate to the part where you can choose how your second monitor functions such as display, mirror, or even no display at all.

For Macbooks, choose Apple menu and navigate to System Preferences and then click on Displays. Once there, click on Display Settings and then choose how you want your external display to function.

From here, do the steps as you would with a desktop computer in order to isolate and determine the issue if the blinking blue light issue still persists.

4. Incorrect Input Graphics Port Selected

Cause: Continuing with device issues, another factor to consider is your computer’s or laptop’s video output port.

Solution: For desktop computers, you can try to connect it through the DisplayPort, HDMI, or VGA port at the back of your desktop computer to see if it is a case of a damaged video port that’s causing a blinking blue light.

To note, some desktop computers require discrete graphics cards in order to output video. Switching to this display port may solve the issue.

5. Faulty Graphics Card

Cause: Another issue that may cause Samsung monitors to blink blue light is a faulty graphics card.

While a faulty graphics card may still be able to output video to a monitor, there will be also instances where it is completely dead even if your desktop computer turns on.

Solution: You can switch to another graphics card in order to solve this issue. Furthermore, you can also remove your desktop computer’s graphics card and test the display output with the onboard graphics card if the feature is supported by your desktop computer’s CPU.

From here, plug in the DisplayPort or HDMI cable to the appropriate port at the back of your desktop computer.

6. Outdated Display Drivers

Cause: There may be a time when you turn on your desktop computer, it turns on with display, but after a while, the screen turns black and you’re met with an endlessly blinking blue light.

Solution: This may be easily solved with a simple update of the display driver of your desktop computer’s graphics card. The first thing to do here is to go to Safe mode, and then do the driver update for your desktop computer.

For desktop computers with NVIDIA graphics cards, you can update the display driver by clicking Start>NVIDIA Corporation>GeForce Experience. From there, navigate to the Drivers tab, and then check if there’s an update for the driver.

For desktop computers with AMD Radeon graphics card, you can update the display driver by right-clicking on an empty part of the screen and choosing AMD Software: Adrenalin Edition, and from there check on that window if there’s an update that you can download.

For Intel onboard graphics card, you can check for an update through Settings>Update & Security>Check for updates.

7. Resolution/Refresh Rate is More than What the Monitor Supports

Cause: There may be times when you encounter a blinking blue light when you switch to a resolution or refresh rate that goes beyond what your monitor supports.

If your settings don’t revert to a working one whenever this happens, try to boot your desktop computer into safe mode and change your display settings to what your monitor supports.

Solution: To do this, if you can’t get past the Windows boot-up screen, switching your desktop computer on and off through the power switch repeatedly will give you the option to boot it into safe mode.

Once booted into safe mode, click on an empty space of your screen and then click on Display Settings, and from here choose the native maximum resolution your monitor supports.

To change the refresh rate, go to the Advanced Settings from the same window and then select the maximum native refresh rate that your monitor supports.

8. Incorrect Input Selection

Cause: Modern monitors feature multiple display ports to let you connect multiple devices aside from your desktop computer such as gaming consoles, laptops, and even mobile devices that support monitor display output.

Solution: There are instances when you can only see a blinking blue light even after you switch on your device. When this happens, you can try to change the source of the display.

This differs from monitor to monitor. You can do this by going to your monitor’s settings by pushing the buttons on the monitor itself.

Navigate to Input Selection or Source and from there select the appropriate device that you wish to use or where the display will come from.

This could be from HDMI 1, HDMI 2, DisplayPort, or even VGA depending on the connection your monitor supports.

9. Faulty Product

Cause: When you’ve exhausted all of your options, it might be best to consider that the monitor itself may be the culprit.

Several factors that could cause this issue to occur can range from a faulty power supply, blown out capacitors, malfunctioning motherboard, and the list can go on.

Solution: When this is the case, it may be best to consider just giving up and seeking the help of a certified technician.

Samsung monitors typically have up to three years of warranty, and as previously mentioned, you may be entitled to a free repair depending on the damage to your monitor.

It’s best to not attempt repairing the monitor yourself. Not only can this void your warranty or damage the monitor even further, but it can also even cause harm and electrocute you if you don’t know what you’re doing.

You may send an email to Samsung’s support team or call the nearest Samsung service center in your area. They will be able to advise and give you more details as to what may cause Samsung blinking blue light issue.