Computer Projector

A projector is a device that reproduces images produced by a computer or Blue-ray player by projecting them onto a screen, wall, or other surface. Most of the time, the predicted surface is broad, smooth, and lightly colored. Still slides or moving pictures may be projected using projectors.

To project images on wall without a screen, we need following

Necessary Equipment for Computer Projection

  • Projector
  • Laptop
  • A laptop power cord
  • Projector remote
  • A smooth neutral wall surface (white is preferable)
  • A VGA / HDMI / USB cable

How to Identify Available Connections For Computer Projection?

Finding an identical port on both devices is the first step in connecting your device to a TV or projector. Once you've found the right port (one that's the same on both your input and output devices), you'll need the right cable to link them. This section includes an image of the back of an Epson projector, as well as examples of the various communication ports.


VGA was once the most popular connection on both desktop and laptop computers, and it's still used on many projectors. Each end of the VGA cable has a 15-pin connector that plugs into a VGA port on the unit. Since VGA isn't supported by most televisions, we suggest using HDMI because of its wider range of compatibility.


At the moment, the HDMI link is the most common. HDMI ports are used on almost all modern televisions and projectors. HDMI is supported by the majority of laptop computers, and it is becoming more popular on desktop computers, including those without a high-end video card. Because of its high-quality signal and ability to carry both audio and video signals, HDMI has become the industry standard for all electronic equipment. An HDMI cable is shown in the illustration.


DVI is a newer link than VGA, and it provides a clearer picture. Although not seen in our Epson projector example, the DVI port can be used with a projector but not on televisions. It's only available for use with displays on desktop computers. As a result, projectors with DVI inputs can only be connected to a desktop computer. As a result, if HDMI cables are open, we suggest using them.

Connect Laptop To Projector

  • Connect the projector and laptop power cords (you don't want your laptop's battery to die in the middle of your presentation!) and position them where you want them for your presentation. Strong, light-colored walls are ideal for projecting on. Make sure your laptop isn't in a way that will obstruct your audience's view of the projection.
  • Using a VGA cable, connect the laptop to the projector. If the laptop isn't already on, turn it on, but leave the projector off. A VGA cable normally has blue rectangular plugs on both ends and connects to a trapezoid-shaped port with three rows of pinholes (also usually blue). Some projectors can attach via USB if you don't see or have a VGA cable. Simply plug one end into your laptop and the other into your projector.
  • When your laptop has booted up, switch on the projector. Some projectors will detect your laptop and show the screen automatically, while others will require you to set the display to "Computer," "VGA Input," or "USB Input." If your screen is not automatically displayed, you may need to adjust the display properties on your laptop.
  • If you know which function key enables display output, hold down Fn and that key (for Dell laptops, it is usually F8, Toshiba F5; check your function keys for a symbol that looks just like big display). If you don't know what feature key to use and can't find it, go to Control Panel > Displays > Settings and choose "Identify." On your laptop screen, one of two boxes (labelled "1" and "2," respectively, reflecting your laptop screen and the projector) will flash. Right-click the non-flashing box and choose "Enable Display." The laptop should now be visible on the projector.
  • If there are any problems with the projection, such as only seeing your desktop backdrop or only seeing a stretched version of your laptop computer, choose "Advanced." Change the "Advanced" options until you're happy with the show, and then you're ready to start presenting!

There are two factors that can impact the clarity of your photographs when projecting on a wall from a laptop:

Wall’s Color

The surface will not be reflective enough to provide clear images if you are projecting on a dark wall. You should project onto a light-colored wall to get the best results. The best choice is typically a white wall.

The Wall's Surface 

A smooth surface is needed for a clear and sharp image when projecting. Photos can be fuzzy if the wall is bumpy or cracked. If you want the best images possible, project onto the smoothest wall you can find. To get the best viewing experience, note to keep the ambient light in the room as minimal as possible.

Switch off any overhead lights so that the projector is the only source of light reflected on your projection wall.

Some Benefits Of Projecting Image On Wall

  • You don't need to purchase a projector
  • You can set up anywhere, even outdoors
  • Your picture size isn't limited to a specific screen size, allowing you to project massive photos.

Some Drawbacks Wall Projection

As versatile as projecting on a wall is, there are a few drawbacks to consider.

  • A good image may be projected on a wall, but picture quality is better on a television. Screens are designed to absorb ambient light and reflect it more effectively.
  • If you're projecting on a wall, you'll need to find one that's suitable for the job. With a screen, you can set up almost anywhere; however, with a wall, the color and texture of the paint can limit your options.

To find the best answer to the question about How To Project Image On Wall From Laptop? You have Modify the display settings.

On Your Laptop, Change The Display Settings For Projecting Outside

Change the display settings on your laptop to get the best picture quality possible for Projecting Outside. The image's brightness, contrast, and sharpness can all be modified. The best projection settings for your wall can vary from those for your laptop screen. To get the best picture quality, tweak your settings.