Time
5 hours 33 minutes
Difficulty
Beginner
CEU/CPE
3

Video Description

Troubleshooting Display Issues part 1 Let's now look at some common issues that occur with a monitor display and how to troubleshoot them. We begin with a discussion of VGA by defining what VGA means and how it works and some of the issues that can result and why. You'll learn about what happens when there is no image displayed on the screen, what happens when the video card isn't supported by the OS, overheating issues and what causes them, dim images and how tweaking the monitors settings corrects that, and what happens to cause dead pixels

Video Transcription

00:04
Hi and welcome to Cyber Harry. My name is Anthony, and I'm your local subject matter expert here for a plus. And today we're gonna be troubleshooting common display issues. So let's go and take a look at some of the display issues that we may have with our computer monitor. Now, if we're trying to start our computer and we noticed that our computer wants the boot and will only
00:22
display an image in something called V G. A mode
00:25
VJ mode is essentially a reduced its a reduced graphical output. So our computer isn't pushing out the highest resolution graphics. It's not pushing out as strong graphics capability as it possibly can. So we'll notice we have a really wrote low resolution.
00:44
We have some really basic colors.
00:46
So we want to figure out why our computers doing this. Why is it why is it starting in this V g a mode? While it may mean that our monitor resolution is out of range, we may have set our monitor resolution to a setting that isn't supported by our monitor or supported by our video card. So
01:03
a lot of times on our display settings now, if we set our monitor to a resolution that's out of range and the monitor goes out. Windows will prompt us that with a command that says is this display setting okay? And we have to click Yes, car keep these display changes. So that way it prevents us from accidentally setting, setting a monitor this out of range
01:23
because if we don't click okay after it makes the change within so many seconds,
01:26
it'll revert back to the old ones. But sometimes we will get stuck in this PGA mode. So we want to change those resolution settings that we have when we're booting into our computer so we won't be out of range and we'll be able to view what's going on.
01:42
We also may have a video card slash monitor that's not supported. We may need to install a different driver on our computer so that it can support the video card properly or the monitor properly, because if we have our computer can't support this video card or can't support this monitor, then it'll start, at least in this low resolution,
02:01
low, graphically
02:02
grow graphic envy Jeanette VJ mode so that we at least can see what's going on our computer, and we can at least get started with doing something and making changes to fix the problem.
02:14
We cannot. We also may have the situation where we don't have any image on the screen. Screen is blank, can't see anything, so we need to trouble Shoot that well. Our first thing we want to check is this. The monitor turned on and plugged in. Does the monitor have power? Does it have a light on it? The power source? Because we are the power button. So we want to make sure that
02:31
the monitor itself is turned on.
02:35
Next, we want to check for any bad connector or loose cables in addition to the power cable. We also have a video cable that's going into the back of our monitor. Is this video cable loose? Is it not screwed in to our monitor or the computer? Are there any pins that are bent or broken on either of the cable ends? Is there a short in the cable?
02:53
These are all things that we need to check. These are all up
02:55
possible issues that may cause our cable to be what's making our image not display on our screen.
03:04
Next we have our low brightness setting. It's maybe on our laptop. That's maybe on our display settings on our computer. Or this may be on the monitor itself, these low brightness settings, maybe to the point where if we're outside and the display brightness is very, very low, it may look like we don't have any image on the screen.
03:23
So we need to check those brightness settings and make sure that's bright enough that we can actually view what's going on.
03:28
And then we have incorrect dual monitor settings. Ah, lot of our computers support the ability to display to monitors at the same time. If we are in a war on a screen that that the screen that we are looking at is black and then it thinks there's a dual monitor that it's displaying the image on,
03:46
then we're not gonna see anything on our screen.
03:49
There's also a setting in our dorm monitor settings that is projector on Lee. So if we're connected to a second screen, or if we're connected to a device that our computer seizes a projector or sees is a dual monitor and maybe disabling the screen that we're currently looking at.
04:03
Now, if we're connected to a projector and we have this projector on Lee turned on
04:09
than our actual monitor is not gonna display anything, So we need to make sure that we have those settings correct. There is typically, especially on laptops, a function key that you compress that will toggle between the different monitor settings. Do monitor extended duel, Mano Duke dual monitor duplicate
04:28
display on Lee and projector only,
04:30
and we could talk. Go through these to make sure that the display isn't set to projector on Lee, and that's the cause of us not having an image on our screen.
04:41
Next we have overheat, shutdown. Our monitors can shut down because they get overheated. We want to make sure that it's not an issue with the actual power supply inside the monitor. There's not an electrical issue inside the monitor, but it can also be things such as a dusty computer internal. So the
04:58
internals inside of our monitor the internals inside of our computer or very dusty. There's not enough in elation,
05:02
and so it causes an overheat, and so it shuts down our monitor, shuts down our computer on our computer end, we may have an over Keating video card,
05:13
especially those who insult high end gaming or high end graphics cards inside their computer. These graphics cards, if, say, the fan on the graphics card isn't functioning properly. Or maybe there's not enough air floor circulation in the computer. Those graphics cards can overheat and shut down.
05:31
This will cause us to have a loss of
05:33
loss of display on our monitor, or or it may even cause our computer entirely to shut down.
05:41
Then we have dead pixels, dead pixels, maybe a single pixel on our screen that is blank, or maybe a vertical horizontal line of pixels that are blank. And these dead pixels are typically the monitor's fault. They're typically, they typically mean that the monitor has had some sort of damage to that pixel or that pixel line,
06:00
and so that's in order to
06:02
correct that, we'd actually have to replace the whole monitor. In addition, we may want to also check our cable and check our connector. I'd be more rare for the connector or the cable to have anything to do with actual dead pixels, but it is something that we want to check
06:17
because we definitely want to rule out a cable or connector issue before we go out and look into purchasing a whole new monitor because of dead pixels,
06:25
only to find out that it wasn't that the monitored this problem.
06:30
Then we have artifacts. Artifacts are when you have a display and you're looking at Are you trying to look at your screen? And it looks like you may be able to see part of your screen part of what you're supposed to see. But then everything's kind of garbled up. There are lines of colors that are inverted.
06:47
There are pictures that are broken up, and they're sort of scattered all over the screen.
06:54
It's almost like someone took a big Jake. It's like almost someone took a, uh, an etch a sketch of what your screen is supposed to look like and then just took all the lines and just scramble them all over the place or took a giant jigsaw puzzle on. Just scramble all over what your screen is supposed to look like. Now, these artifacts, maybe a
07:13
indication that we have a driver or video card malfunction.
07:15
Our driver may be bad for this for the video card that we're using, or we may have updated our driver. And it's not working with our video card like it needs to be or the video card itself may be malfunctioning. The video card. Maybe having some issues with just interacting with our computer.
07:34
It may be
07:35
physically starting to lose its circuitry. The circuitry may be starting to wear out, or if it's especially or if it's really, really old and may just starting to be starting to go bad. So we need to take a look at that driver. Take a look at our video card and possibly our reinstall, or roll back our driver.
07:56
Get a new video card,
07:58
or maybe check and see if there's software for that video card available. We need to install in order to make sure that we don't have those artifacts. And next we have our dim image. Dim image just means that the image on our monitors very, very dim. It's not. It's not bright.
08:13
It's harder to see things we want to try to figure out why the monitors *** it, see if we can make it brighter.
08:18
Well, it could just be our monitor brightness settings on the monitor itself. We need to make sure we adjust those, turn them up if necessary, especially if it's very low that we can't see our monitor very well may be just the display settings on our computer. Especially. Our laptops will have a built in
08:37
control over how bright our monitor is on the computer itself.
08:39
That way we can save some power, save some electricity when we're when we're in a situation where we have let we're on our battery or we want to just save a little bit of electricity. We can turn down the brightness and our display settings and maybe the monitor going bad. Maybe the market monitor starting to die or the inverter starting to go out.
08:58
Or maybe that we're just sitting outside.
09:01
If we're sitting outside or there's a lot of sunlight on our monitor, there's only so much that it can do to look bright. So we need to make sure that it's not just that we're in the wrong type of lighting and our monitor looks very depth. There's only so much that it can do tow, actually combat the sunlight or combat other light sources

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Instructed By

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Anthony Harris
Senior Systems Engineer at ZenPoint Solutions
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