What is responsible for the flickering of a computer monitor?

Answer 1

Your monitor is probably alright. If it was going bad, you would most likely start to see a constant black stripe on the top or sides. Some monitors naturally flicker some when playing videos, such as certain Acer flat-screen monitors.

It could be a sign that you are using the wrong refresh rate or the wrong video card driver settings. Try updating or reinstalling the video card driver (the software that runs the video card).

You could be running low in RAM or just hard drive space, so try removing unwanted programs, games, pics, videos and even documents. Then defragment the hard drive. This would more likely just address a jerky display, not actual flickering. Check that your PC's fan is not clogged with dust, to make sure the system is not overheating.

Sometimes malware (viruses and spyware) can cause video issues. For instance, one type of spyware displays a green dot in the upper left corner of the screen.

Answer 2

Both television and movies work in the same way- the screen shows images quickly- one after another- with small movements between the two images. The brain bridges the gaps between the two still images, making it seem like the image "flows" in a continuous movement. For an example, think of one of those "flip-books" you probably had as a kid- when you flipped the pages, the image seemed to move? Or think of the old Hercules films, where the image seemed "jerky" because the filmmakers actually repeated a picture for a number of frames before moving the monster. Or here's a demonstration you could do right now- find a blank part of the screen and move your pointer back and forth very quickly, keeping it inside a small blank section of screen. Do you see how the monitor shows lots of little still images of the cursor? Those still images of the cursor are all the monitor ever shows us- but when the images occur right next to each other (when we move the cursor slowly), we think the image is continuous- That's our brain blending the cursor images together. Tricky, tricky! Anyway- the human brain edits out the small gaps of darkness between the image on the screen, making you believe that you are watching a continuous "stream" of light. To get away from theory, and back to your question- the monitor "refresh rate" is what you are referring to. This refers to how often the screen displays another image. (I don't remember how often this usually happens, but I think it's something like 60 to 75 times a second for standard monitors?) The higher the refresh rate, the less "flicker" you will see (because your brain is editing out shorter and shorter blank gaps between images). If you want to try changing your refresh rate- I found it in the control panel (Click Display, then Settings, then the button: Advanced, then the tab for "Monitor"). I just notched mine up to 75 Hertz- no noticable difference, but I've heard that higher refresh rates reduce eyestrain. We'll see. Interesting side note- one of the biggest enhancements between regular TV and High-definition TV is a much faster refresh rate (that's right isn't it? I don't know how much faster HDTV's refresh). Probably more info than was strictly called for- hope it points you in the right direction. I think monitor refresh rate is a measure of monitor quality, and it may need a better graphics card to supply input for higher refresh rates- but here I am totally out of my depth. Best of luck! Kevin Porter

Answer 3

If your computer screen flickers, it is most likely caused by a power cord glitch, a power outlet that doesn't have enough watts to support your computer and CPU, or you need a new graphics card, as the monitor's driver might not support the graphics card currently in your computer. Also, you may need a new monitor-CPU cord to connect your monitor to your CPU.

Answer 4

it flickers because the cathode ray... which is generated by the cathode ray tube is being shot at the glass front (the thing your looking at) and its just a beam so its sweeping back and forth across the glass at some number of times a second. you just happen to be lucky enough to be able to notice each pass.

Answer 5

There are a few things that can cause your computer screen to flicker. One being other electronic devices being placed into close proximity of the computer. Also, the rate at which your computer refreshes can also cause the screen to flicker.

Answer 6

Most likely the refresh rate setting on your display adaptor is not ideal for your particular monitor.

Answer 7

i have had this problem many times and then when i made shirr the cord in the back was tight into the computer the problem went away and this is on an 33inch LCD screen good luck

Answer 8

1. connection cable not plugged it.

2. right click on desktop chose properties, go to display and turn down the fps of the moniter

Answer 9

smash it with a hammer