How to Fix No Signal on My Computer Monitor (And Other Monitors)?

You are currently viewing How to Fix No Signal on My Computer Monitor (And Other Monitors)?

When I began my career, there was no such thing as a laptop or desktop computer. Instead, we utilized televisions and monitors for our work needs. However, in recent years there has been an immense advancement in technology; from the onset of computing with ENIAC in 1946 until the present day when we possess smartphones that are comparable to those from decades ago!

Today’s computers and flat-panel displays are more powerful than ever before, yet they still rely on the same cathode ray tube (CRT) technology used in previous generations. This means that if your screen becomes damaged beyond repair – such as if it’s cracked or dead – then it will be replaced with another one just like it!

Fortunately, repairing a CRT monitor is not particularly difficult despite its vintage components. All you will need is some basic electronic knowledge along with some simple tools like an oscilloscope or multimeter. The cost of parts should also be negligible compared to purchasing a new LCD screen!

1. Verify Your Power Supply Is OK

While it might be easy to overlook, we can’t forget that your computer’s power supply is a vital component.

If your system fails to boot up or has glitches when trying to connect to the internet, it may be an indication of needing a replacement PSU. Furthermore, if you observe flickering, noise, or even damage on components while using your PC – then you should consider seeking help immediately!

Fortunately, replacing your out-of-date power supply shouldn’t require any drastic measures. Simply unclipping cables, detaching brackets, and disconnecting power strips are all that’s needed in order for this process to take place – just keep in mind that if replacing previous models with more advanced ones; ensure they’re compatible with the latest components in use!

2. Make Sure Your Computer Is Connected Correctly

If you are still experiencing an issue with your monitor, be sure it is connected correctly. I can relate to this predicament: when my son was an infant and we settled into our new home, we had him tested for hearing defects – only to find out he could not hear anything above low-pitched sounds! Just like him, your computer must be able’tyone behind the user interface. It will require more than just connecting cables if you want to attain optimal performance!

After everything has been connected correctly, take a look at the ports of your computer. Is the VGA port free? Are there any other devices sharing that port such as DVI or HDMI? If so, then consider disconnecting them for security purposes. If it’s free but doesn’t have an allotted driver for your device installed – don’t forget to update it!

3. Check the Monitor’s Settings

As with any resource, ensuring that the monitor is set to the appropriate resolution (usually at its native size), refresh rate (typically 60Hz), and brightness can help resolve most signal issues.

If you are still encountering problems with having no signal on your computer monitor, it may be that one of these settings needs adjustment or even a simple restart of your device will do the trick.

4. Move Out of the Way

If you’re witnessing the infamous ‘no signal’ on your monitor or any other type of screen, it’s possible that they are simply situated in an unfavorable position. Essentially, if you do find a location where there is ample space around it but still no connectivity – don’t fret!

To determine whether or not your monitor could be positioned elsewhere on your desktop (e.g., rearrange cables), obtain an extension cord and connect one end to your computer while the other is connected to the power outlet near its rear. If there is still no connection with the monitor despite uncovering no tripping circuits then perhaps it’s a simple task of repositioning it!

5. Change the Display Resolution

Discerning individuals can select between the two display resolutions: 800×600, 1024×768, and 1600×1200.

At any given time, your monitor may be outputting a resolution that is lower than what’s listed on its box; if this occurs don’t fret – simply change it! Select one of these options and toggle them back until you find the one that provides the optimal resolution for your needs.

Monitor settings vary greatly from device to device, but rather than futz around with the myriad configurations possible, consider using an app like ResizeIt (which boasts over 300+ pre-installed presets) or alternatively manually tweaking it yourself via image editing software.

6. Check the Video Cable

  • If your video cable seems perfectly in place, an obstruction can lead to poor picture quality.
  • If you possess a component video cable, disconnect it from its port and reinsert it into the corresponding one. If that doesn’t resolve the issue, switch to an HDMI cable.
  • If upgrading to newer technology is not an option, then consider switching cables.

7. Turn Off Other Monitors and Move Out of the Way

Even if your monitor is functioning properly, other devices in close proximity to it may be failing you. Be sure to turn off any monitors connected to them (or disconnect them entirely) before attempting anything else.

Sometimes a single device can prevent you from viewing your display. For instance, an unplugged Ethernet cable could cause the system to ‘forget’ which inputs are being used – leaving no choice but to reboot into Safe Mode or even use a different PC altogether!

If multiple displays fail at the same time, try moving further away from the problematic one for a more comfortable viewing experience.

8. Clean the LCD Screen

If your LCD screen is not functioning properly, then it’s time to consider a replacement. This may entail shelling out some cash for a new model – or alternatively investing in a refurbished one that comes equipped with all of the features of its newer counterparts.

If you’re planning on purchasing a replacement, then look for models that utilize the latest technology and components; however, keep in mind that older-model LCDs still offer high resolution compared to their predecessors!


If your computer’s screen exhibits no image whatsoever, don’t panic! This is a less serious issue than one that causes the monitor to display distorted or unrecognizable content. Nevertheless, both can be remedied easily – as long as you know how.

If your monitor is exhibiting signs of failure, it may well be time to invest in a replacement device.