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Monitor Goes Black Randomly [Quick Fix]

Monitor Goes Black Randomly

Many people face the problem that their monitor goes black randomly. As a result, it not only interrupts work but also keeps on annoying you in the middle of a game.

Here are the main reasons why your monitor goes black randomly,

  1. Loose or faulty connections in your video cable at the monitor or PC side.
  2. Problem with the graphic card
  3. Sudden Magnetic flux from other home appliances
  4. Low/high voltages or power supply problem
  5. Incomplete or wrong drivers installation
  6. Loose power button on the screen
  7. Overheating

But not until now, because I have personally felt the same problem and have dug it to the core. Here is an easy guide to fixing the monitor that randomly goes black,

1. Faulty Video Cable Connection

The monitor is connected to your PC or other Video processors via a cable. These cables have different configurations and specifications. Some are old school, like VGA Ports, while others are the latest, like HDMI cable ports.

In most cases, when your monitor goes black randomly, the only problem lies in a loose connection that has got nothing with permanent damage.

All you need to do is plug in the video cable properly and tighten the screws if it’s a VGA cable.

But interestingly, the old school ports like VGA, DVI, and composite video ports and their cables are prone to problems more than the latest ones.

This is because the male end of these cables has many spiky pins prone to damage during connection.

Furthermore, the female port holes get bigger with time if you repeatedly plug in the cable. This creates a loose connection between the pins and the port site.

Damaged HDMI and VGA Pin

If you have accidentally damaged any pins, it might be the sole reason your monitor is going black. Unfortunately, your cable can’t be salvaged in such cases, and you must buy a new one.

Loosened VGA Port

In cases where female port holes have got loose, you must find another port for the cable to plug it into. Thankfully, your PC might have other video output ports like HDMI. Connect to this, and your problem will solve.

If you do not have an extra video port, you will easily find a USB to VGA, HDMI, or DVI convertor online and fix your problem.

Most importantly, if any of your PC ports are damaged, do not worry; you can still replace them with a new one. Just visit a well-reputed repair shop.

Last, a cheap video cable might get damaged internally during extreme manipulation, which can also intermittently black out your monitor screen.

2. Problem with the graphic card

To avoid this problem, I insist on not saving a few bucks but instead buying a high-quality cable so you may not face the problem again.

Aftermarket, graphic card comes with their own built-in Video output ports. Unfortunately, like PC ports, these are also prone to damage.

Always insert video cable into the port under sight. When you blindly try to insert a video cable into the port, you might damage the cable or the port.

This will result in your monitor going black randomly. If you have damaged the cable, buy a new one; they aren’t expensive, but if you have damaged your graphic card ports, take it to an expert to repair or replace the damaged port on the card.

On the other hand, some computer comes with built-in graphic cards. They do not have extra ports but instead use the primary PC video output port.

Another important reason your monitor screen goes black is the problem with graphic card drivers. You must ensure the drivers are fully installed, functional, and updated.

You can check your graphic card drivers by,

Manually checking Drivers
  1. Open Control Panel
  2. Select Display Adapters
  3. Select your Graphic Card
  4. Click on drivers
  5. Check if they are working fine and up to date
Checking automatically

6. If not, you can automatically or manually update the graphic card drivers if you have pre-saved drivers on your computer.

Sometimes Windows 10 automatically loses connectivity to the display due to a bug. In such cases, press Windows key + Ctrl + Shift + B on your keyboard and this will restart the video driver. Accessories such as USB devices, speakers and printers may also cause a black screen in Windows 10

3. Sudden Magnetic flux from other home appliances

This is very important but ignored cause of the monitor going black randomly. High voltage devices such as Air conditioners, heaters, microwave ovens, and refrigerators, when turned on, create a magnetic/electric flux.

This temporarily affects your monitor, which immediately turns dark. You can fix this problem using a high-quality video cable or talk to your home electrician about the problem.

He will adjust the amperage and voltage of your room so the problem will quickly be solved. I had this problem in my apartment, which was solved by buying a high-quality, well-insulated video cable.

4. Low/high voltages or power supply problem

Like your video cable getting loose, power supply cables also have similar problems and can randomly black out your monitor screen.

All you need to do is look for a loose socket or monitor port. Then, replug the power cable into the monitor to see if it feels loose or good. Next, try changing the socket or using another plug. It will give you an idea if your power cable has a problem.

A loose socket and a loose power supply cable

You can also know if there is a problem with the power line by tapping on the monitor or LCD screen. If it turns out you have successfully identified the problem.

Another simple yet ignored reason for the monitor blacking out is the problem with the power button. A loose power button on the monitor intermittently keeps your monitor turning off and on.

Other reasons for the monitor randomly going black and coming back on might be due to fluctuations in voltages. The monitors have built-in power supply units that regulate the voltage output to the unit.

If voltages suddenly fluctuate, the built-in system turns off your monitor to prevent it from permanent damage.

Capacitors inside an LCD monitor

In other cases, the capacitors inside the monitors get damaged due to sudden high or low voltage. In that case, you will need to replace the damaged capacitor.

5. Over Heating

A high-resolution LCD monitor has millions of diodes that produce a lot of heat. To prevent your monitor from getting burned, they are provided with ventilation sinks.

Heat Sensor

However, sometimes when you have been using the monitor for a long time with poor ventilation in the area, your monitor will automatically black out for some time. This is because heat sensors inside the screen automatically do this.

Placing the monitor in a well-ventilated area or keeping a fan nearby should solve the problem easily.

In other cases, the VGA or Graphic cards also have a similar overheating problem. However, they are provided with metallic heat sinks and fans. So they are less prone to this problem. Nonetheless, they still can be the reason for this.

In such cases, Open the PC cover and look for dust, webs, or other things interpreting heat dissipation. Vacuum cleans it, and it should work fine.

If the fan is not working on the graphic card, you must consult a trained technician to avoid burning your graphic card.

Why does my monitor keep going black for a few seconds when playing games?

When playing games, GPU is not able to handle all the apps running in the background. Therefore, the GPU settings are designed by default to dedicate all the power to run your game smoothly and turnoff other background apps. This process takes a few seconds that why your monitor keep going black for a few seconds when playing games

Additional Read!

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