Top 5 Reasons Why
A Monitor Goes Blank

1. Introduction

Computer monitor problems can be very hard to troubleshoot - I mean, if your monitor goes blank, how do you check anything on your screen. So that's why it's important to have 2 monitors in the house. Usually, if I have my desktop PC's monitor going blank, I'll immediately hook up the video card to another monitor. If the screen remains blank, then it could point to a video card problem. If the new monitor displays an image, then it's probably the first monitor that has run into problems.

A typical computer monitor - don't panic if it goes blank!

Reason 1: Wetness

The number one reason why computer monitors go blank is - wetness. Believe it or not, when your computer monitor is exposed to humid air, sometimes water can condense and accumulate in the monitor. This causes the monitor to malfunction and go blank. I've had this happen to my desktop PC at least three times before. What you need to do is to leave the monitor alone for some time and allow the water to evaporate. That usually solves the problem.

Reason 2: Faulty Graphics Card

The next reason why your computer monitor goes black is due to a faulty graphics card. The best way to detect this kind of problem is to connect up a new monitor to your PC, then check if you have a blank screen. If you continue to have a blank screen, then it's likely your video card is faulty.

Reason 3: Faulty RAM

This one is less obvious and less common, but it can happen. You might sometimes get bad RAM modules which prevent your PC from booting up even to the basic BIOS startup screen. To detect this kind of problem is more troublesome, you might need to remove those RAM modules and insert them into another computer.

Reason 4: Loose Connections

Another reason why your monitor goes blank is due to loose connections. The connection from the monitor to the mains is usually a culprit, as is the connection between the monitor and the video card. Check those connections before you declare your computer monitor as faulty.

Reason 5: A Short Circuit In The Motherboard

And the final reason why your computer monitor goes blank? It's possibly because of a short circuit in the motherboard. This is the most undesirable outcome of course, as you might have to replace your entire motherboard. However, it's possible that this can happen - so keep your fingers crossed and hope it doesn't happen to you.

Conclusion

And there you have it, the top 5 reasons why your computer monitor goes blank. Make sure you do a mental check of the above points the next time your monitor goes blank - don't be too quick to declare your monitor as faulty. Until next time, happy computer building!

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