Share how to effectively fix the computer screen error showing No signal

Your computer was still working normally yesterday. But now when I turn on the device, the text no signal appears. If you don't know what to do when your computer screen shows no signal, please refer to TipsMake's article.

Turn on the computer and even though the light is still on, the computer screen shows no signal. This is a common situation that many computer users encounter. This situation is really annoying when the computer screen indicating the remaining error does not display anything. If you are also experiencing the same situation on your computer, here is how you can fix it.

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Information you need to know when the computer screen shows no signal

What is no signal? This is exactly the problem that arises when suddenly your computer goes dark and the words no signal appear. Specifically, a screen signal error is an error that occurs when the screen does not receive a signal from the computer. With this error, determining the specific cause is necessary. Because only when you clearly understand the cause can you effectively fix the No signal screen error.

What causes the computer to show No signal?

If you detect a no signal error on your computer. The first thing to do is to localize and identify the 'culprit' causing the error. Specifically, it can be divided into two cases as follows:

1/ The caps lock light on the computer is still on

If you notice that the caplock light on your computer screen is still on. Now the cause of the error may be due to a damaged connection cable or screen.

 If the caplock light on the computer does not light up. There is a high possibility that your computer has encountered an error. Errors can come from any component on the computer. It could be due to Ram or CPU/ SSD/ PSU.

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How to quickly handle when the computer reports a no signal error

If you unfortunately encounter a no signal error, the first thing you need to do is test to see where the error is coming from. If possible, try plugging the computer into another monitor. At the same time, you should also change the wires and connection ports on the computer and monitor. If the error is due to the wire or screen, you just need to change the wire and screen. And if you try changing the cord or screen, the error still occurs. Now try some of the following:

1/ Clean RAM

Loose RAM and poor connection are the leading causes of no signal errors. Therefore, try removing the RAM on your computer and cleaning it. You can use a soft, dry cloth to clean the connection pins. At the same time, you can also use a brush to clean the ram slot. During this process, remember to turn off the computer's power to avoid damage!

2/ Check the graphics card

Next you can do the same with the graphics card. Because this is the part responsible for outputting images to the screen. Continuous operation in high temperatures and long periods of time can cause the graphics card to be damaged. If your computer is equipped with onboard VGA, you can temporarily plug in the connection cable and the onboard VGA port. In the case of video recording, there is a high possibility that the separate VGA on the computer is faulty or damaged.

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3/ Check main, CPU, PSU

You can also try checking other components of the computer such as CPU, PSU, mainboard. However, to check these components, certain knowledge is required. If you are not confident, take your computer to have it checked at a repair center to be sure.

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Above is information related to the computer screen showing no signal. This is not a serious error, so please stay calm to handle it!

Lesley Montoya

Update 02 February 2024