Input Signal Not Found HP Monitor – Causes And Solutions

Input Signal Not Found HP Monitor

Every component of a computer system is vital to its overall function. However, we can only relate to the computer via the information it displays on the monitor.

HP has been manufacturing monitors for a long time for a wide range of applications. They provide an unrivalled viewing experience and are available in a wide range of models and specifications to meet the needs of every user at every price point.

Have you ever encountered a “no input display” sign on your HP monitor? This article will address possible causes and solutions.

No Input Display On HP Monitor – Causes And Solutions

A no-input display signal on your computer can be frustrating. And, unless you fix it, you can’t perform any task with your system. However, you’d first need to identify the source of the problem. 

Several factors may be responsible for the “no input display” sign on your HP monitor. We shall discuss them below and provide solutions for each case.

1. Improper or damaged display connection:

Your monitor connects to the computer via display cables like HDMI, VGA, Thunderbolt, or DisplayPort. Each cable type has a compatible port on both the computer CPU and the monitor.

A problem with any of your display connections can result in the “no input display” message. Some issues that can affect your display connections include 

  • loose cable connections to either the monitor or the CPU,
  • damaged cables, and 
  • damaged ports

A loose cable connection will affect communication between the monitor and the CPU or the graphics cards. Sometimes, your monitor may not detect a display connection. 

What can cause a loose cable connection? The first is wear and tear. Second, random impact or accident can dislodge a cable from its designated port.

Apart from a loose connection, your cables or even ports could be damaged. For example, a broken cable mouth or even a damaged port can result in a no-input display error.

Solution: Check for loose cable connections on either end. Better still, disconnect and reconnect the cable connections. Also, inspect your cables and cable ports. If you spot damage to the display cable, replace it. Take your computer or monitor to a service centre to change a damaged port.

2. Damaged hardware:

If your computer’s display connections are intact, then it’s time to check other hardware. Generally, your monitor, graphics card, and motherboard contribute to the display function apart from the display connections. So, it’s likely that one of these components may be faulty.

Solution: First, identify the faulty component by connecting your monitor to another computer. If the display works fine, your monitor is in good condition and you should install a new graphics card and even replace the motherboard.

On the other hand, if the monitor does not display on another computer, it may be faulty, and you should replace it. In rare cases, though, both the computer and monitor may be faulty.

3. Wrong input selection:

Modern computers have ports for HDMI, VGA, and DisplayPort connections. You must select the correct input option for any of them to work correctly. Sometimes, you may be having a no-input display signal on your HP monitor because you chose the wrong input option.

Solution: Use the buttons on your monitor to access the input options. Depending on the model, you would find the controls by the side or at the back of the monitor. In the input options, find and select the correct input method.

Frequency mismatch: The “no-input display” signal could also be due to a frequency mismatch between the monitor and the computer’s monitor output. 

Newer monitors have a higher frequency range and may be unable to display visuals from a display card with a lower frequency. The monitor, on the other hand, may be old and incapable of handling the computer’s higher frequency output.

A monitor’s frequency refers to its refresh rate. The refresh rate of your monitor refers to how many times the image on the screen refreshes in one second. The refresh rate of your monitor is measured in hertz (Hz), and the higher the number, the faster it refreshes.

You may be able to change the refresh rate depending on your monitor and graphics setup. Overclocking is an option, but some modern monitors have adjustable refresh rates that you can adjust with Windows 10.

Solution: Adjust your monitor setting in Windows to correspond with the hardware specifications. In Windows 10, go to Settings and select System Display

Next, click Advanced Display Settings and select Display Adapter Properties. Go to the monitor tab and adjust the frequency or refresh rate.

However, if your monitor cannot meet your computer’s minimum frequency, replace it with a newer one.

HP Monitor Port Types

HP computers have a variety of port options, each with its functions and applications. Therefore, you’ll need to know the type of ports on your computer before buying a monitor. 

The most common port types available on modern HP monitors include HDMI, USB-C and DisplayPort. However, you’ll find DVI and VGA ports on older displays. Knowing the kind of ports you have will help you choose the correct cable.

Let’s consider the different port types in detail, including their merits and demerits.


IBM first introduced the VGA display standard in 1987. VGA colour display screens have a 640 x 480-pixel resolution, a refresh rate of 60 Hz, and can display up to 16 colours at once. However, at a reduced display resolution of 320 x 200, it can display up to 256 colours.

VGA can only display lower resolutions and images of lower quality on screens because it uses analogue signals.

Older game consoles like the PlayStation 2 and SEGA Dreamcast are VGA compatible and may even perform better with a VGA cable, though they require adapters.


DVI or digital video interfaces were the most prominent display ports before the HDMI emerged in 2002. They have up to 24 pins and can handle both analogue and digital video signals. 

With dual-link DVI connectors, DVI can support up to 2560×1600 pixels; single-link DVI connectors can support up to 1920×1200 pixels. Some DVI cables or ports may have fewer pins if they’re designed for lower-resolution devices. However, if your port has all of the pins, it will support the highest resolution with ease. The biggest problem with DVI is that it doesn’t support HDCP encryption by default, so you won’t be able to play full HD Blu-rays or other HD content if your hardware only has DVI ports.


High definition multimedia interface (HDMI) ports are the most common ports on many HP computers. And they are, in many respects, the industry standard for display ports.

HDMI ports are all-digital interfaces that can receive and transmit video and audio signals from various sources to multiple display monitors. HDMI cables can transfer lossless video and eight-channel audio at up to 18 Gbps. 

Four types of HDMI cables can connect to an HDMI port. They include the standard, high-speed, premium high-speed ultra high-speed HDMI monitor cables.

The standard high-speed cable is the most common option and can display graphics up to 1080p resolution. For a 4K video, you’ll need a high-speed HDMI cable. Devices with HDR capabilities require a premium high-speed cable, while 8K video displays require ultra-high-speed cables.


USB-C ports are rotationally symmetrical 24-pin connectors available on monitors that are more versatile. In addition to video, the USB-C port can also output audio, data, and power. Its versatility makes it ideal for anyone who only wants to use one type of monitor cable.

The fact that you can plug the USB-C cable either way is one of its best features. Because it allows you to connect your smartphone, tablet, and other devices to your monitor, the USB-C cable is helpful for use with multiple devices.


DisplayPort is a more recent connection mainly found on high-end monitors. Usually reserved for high-end graphics cards, DisplayPort is adequate for visually demanding video editing and gaming tasks.

DisplayPort is the first display connection to use packetized data transmission, already featured in connections like the USB and Ethernet. In addition, DisplayPort is backwards compatible to connect to other display connections like DVI and HTML.

How To Care For Your HP Monitor

The following suggestions will help improve your monitor’s performance and shelf-life life.

  • Use only a compatible power source and connection for your monitor. You’ll find the specifications on your monitor’s label.
  • Keep your monitor turned off when you’re not using it.
  • Keep the slots and spaces in your monitor free of any blockage as they provide ventilation for the monitor.
  • Place your monitor in a well-ventilated area away from bright lights, heat, and moisture.
  • To avoid scratching, defacing, or breaking the monitor, place it face down on a soft surface while removing the monitor base.


Several factors can cause a “no-input display” error message on your HP monitor. The most prominent causes include wrong input selection, loose or damaged display connections, and damaged video cards and motherboards

Carry out some troubleshooting to identify the cause before you decide on an appropriate solution.

You can correct the wrong input selection in the monitor settings using the buttons beside or at the back of the monitor. Also, check your display connections for loose or damaged cables or ports and replace them where necessary. Also, check your video card and replace it if damaged.

Similar Posts:

Leave a Comment