Time
5 hours 33 minutes
Difficulty
Beginner
CEU/CPE
3

Video Description

Troubleshooting Laptop Issues Part 1 Welcome to Cybrary IT's A+ course and this lesson examines common troubleshooting issues that are strictly laptop specific. Unlike with a computer monitor, laptop display have an inverter, so one of the key issues that occur is no display which may be the inverter, or low/flickering display which is not tied to the inverter. Other issues could also be dual session settings, power related issues – such as the AC/DC conversion, low batter or brightness settings. You'll learn how to configure and correct all of these and well as about toggling and what purpose the function keys serve.

Video Transcription

00:04
hi and welcome the cyber dot i t. My name's Anthony and I'm your local subject matter expert here for a plus. And today we're gonna be troubleshooting common laptop issues. So when we're using our laptops, what are some of the common issues that we can experience that are kind of laptop specific?
00:18
Now we've talked a little bit about laptops and troubleshooting. Some of their issues in some of our previous sections, such as our display section are networking section.
00:26
But there are some issues that may apply just for laptops or some troubleshooting settings that just apply for laptops. So let's take a look at those
00:34
now
00:34
when we have our laptop that does not have a display. The display is dark. This may be our inverter or backlight issue on our laptop itself. On the monitor, there's a inverter near the bottom part of the monitor. Now our computers run on D. C. Direct current and our walls
00:54
push a C alternating current,
00:56
so our power supply converts a C to D. C.
01:00
Now,
01:00
the problem is, our laptop monitors
01:04
need
01:07
again
01:07
a c current. They need that alternating current. So there needs to be something in order to change that back from the A C that's on our wall.
01:15
So we have a C at our wall
01:19
to D. C to D. C. Inside of the major. The main components in our laptop, such as our mother board, are hard. Drive our CPU,
01:27
and then our monitor needs a C. Again,
01:32
there's a small component. There's an electrical component at the base of our monitor
01:38
called the Inverter.
01:41
We'll just draw that line over there. The inverter changes that D. C. Current inside of our laptop in the battery back into a sea so that it'll work properly with our monitor. Now, if our inverter isn't functioning properly for inverters gone bad or for having a back lighting issue on our laptop monitor,
01:57
we won't get a display. We may be able to look very, very closely at the display or in a very dark environment and see a little bit of something going on.
02:07
But generally we won't see that display
02:09
another setting that another issue that we may be encountering that we're not gonna get a laptop display is our dual screen settings. Many of our laptops now have additional ports, so that we can plug them into extra monitors. Ah, projector, et cetera. And these dual screen settings
02:27
tell our laptop whether we want to display on both of the monitors or if we want to just display on one.
02:32
One of the settings is projector on Lee. Now, if we have our display setting set to projector on Lee, we won't see anything on our laptop screen will only see our output on whatever we have connected. The two are laptop, and if we don't have anything connected to our laptop or of what we're connected to, has turned off, then we won't have a display.
02:52
So we may want to check our dual screen settings, and many times this is actually a function key on a laptop. We can hold down the function key and then press the corresponding icon,
03:04
and this will allow us to toggle through our different display settings, which may in turn switch us back over to showing our laptop monitor display.
03:13
Then there's the LCD cut off switch. Now the LCD cut off switch, maybe a small but are maybe a small switch
03:21
or a small, a small Chicago point
03:24
where when our monitor closes past a certain point, it pushes this down. Now, this essentially lets our computer think that our monitor is closed, that our that our laptop lid is closed. When it does that, it's gonna turn off our monitor. So sometimes this small switch can get stuck.
03:42
Sometimes it can get jammed in the down position. So we want to check and see if we can find that toggle it
03:46
and or get it unstuck. If it's currently stuck.
03:52
One of our one additional setting, Maybe our resolution may be out of range, or we may have a driver that's not functioning properly.
04:01
So in order to solve one of these, we could reboot and safe mode. So rebooting in safe mode would help our resolution if our resolutions out of range or would help if we had an improper driver say, if we just
04:13
completely re re enters our computer,
04:15
we may need to also adjust the brightness. Now, if our brightness is way too low and we're in so very right environments, they were outside. I may appear as if our LCD monitor is off and made it appear as if we don't have a display. So we want to again. One of our first steps would be trying to adjust our brightness up so we would
04:35
just try to adjust our brightness.
04:38
We would try to change our dual screen settings. Then we would check our our LCD cut off switch. Then we would reboot in safe mode and then one of our last. Even though it's listed first here, one of our last troubleshooting steps would be to actually check the inverter or the back light in our
04:57
in our monitor. We would want to do everything we could possible
05:00
to check and make sure that wasn't the issue before we actually opened up the laptop.
05:06
Next, we have a dim display. Now. A dim display means that we do have a display. We have something going on, but the display is very. It's very ***. It's hard to see.
05:16
This may be because of a low battery some of our computers have are. Some of our laptops have power settings on them that are set when we're disconnected from the wall charger or batter gets past a certain point. It dims our screen very low, so it may not even let us allow us to change our brightness win these power setting straight take effect.
05:35
So we may want to go into our control panel going to our display settings,
05:39
going to our power settings and change check and see what our power plan is. Check and see if our if our monitor gets very dim if we're below a certain battery level. This is a good idea because turning our monitor on our laptop turning our monitor rightness way down is
05:59
pretty much the best thing that we can do to conserve battery power. Because that's what's going to use the majority of our batteries. We turn that way down and that'll help conserve our battery by a lot.
06:09
Now are dim display. If we've checked our power settings, we've plugged or we've plugged our laptop back into the wall, and it's still very dim. We may want to consider that there's too much bright external light. If there's too much light on our monitor screen that it will appear dim or we met may just need to check our brightness settings
06:29
just because our power settings are set so that our monitor screen doesn't dim when the power gets below a certain point or Just because we're plugged into the wall doesn't mean our monitor brightness settings inadvertently didn't get bumped down. So we want to check and make sure that those air all the way up
06:45
and then lastly, we have a bad inverter. Just as in our no display setting, where are we? May want to check our inverter or backlight is being a potential issue. Are bad inverter or ah inverter that's going bad. Mitch may also contribute to having a dim display
07:02
and then, lastly, for our displays. Over here we have our flickering display now flickering. This display is typically going to be indicative of a low refresh rate. Refresh rate is essentially how many times per second
07:17
our monitor takes the image that's displayed on our monitor and redraws it. So how many times How many times per second? Essentially, that occurs now. If our refresh rate is too low, sometimes people say below 60
07:34
as a good number, then there may be a faintly noticeable flickering going on in the monitor, and this may actually cause some people have headaches. Some people have eyestrain mawr quickly.
07:46
Then, if the refresh rate was at a better level, so we may wanna just that refresh rate up to prevent that flickering.
07:53
Also, there may also be a driver issue. We can check our driver issue by possibly rebooting into safe mode, disabling or uninstalling and reinstalling our driver. But if we boot into safe mode and we're still noticing that we have this flickering issue, that it's probably not our driver,
08:07
and then there's Reservoir resolution settings are resolution settings, maybe at an improper setting for our laptop monitor, and this may also cause a flickering. So we may want to go in, check our resolution settings or again attempt to boot into safe mode safe mood with basic basic display basic resolution
08:26
in order to make sure that that's not the case and check and see you make sure that that's not what
08:30
what's going on next on our laptops. We have sticking keys with our desktop. Computers will typically have. Our
08:37
keys are on a keyboard that's separate from our actual best top. It's plugged into through a USB or a PS two connector, but with our laptops are keyboard is going to be part of our laptop. Now we can switch it out. We can pop it off and replace it with a different one. But
08:54
tip about with our laptops. Sticking keys are gonna be a bigger issue than our desktop because we can't just replace the keyboard
09:00
now with sticking keys. This may be because of Warren Keys or warn mechanics. We may have the laptop a long time. We may put it through a lot of use, and if that occurs, then there may be some warn mechanics going on underneath of our keys that's causing the keys to stay.
09:16
There may be food or debris underneath of our keys. Sticky food or drinks or certain types of debris may cause the keys to jam or stick down. So we want to give our keyboard a good cleaning. We want it.
09:28
Consider Spring are pushing some compressed air through the keyboard, turning it upside down while our computers off and tapping out some of the debris just to see if we can get rid of that and stop the sick and keys. Next, we have a different type of sticking Now we may also notice that our keys when we press them down,
09:46
the key isn't mechanically sticking down,
09:50
but it seems like something is causing that key to act as if it's we're holding it down, like the shift,
09:56
the shift button or some of our other buttons on our on our computer. We may be typing and trying to hit letters, and it seems like as we're typing it, see, it's our computer's acting as if we have the function key held down and the numbers that are
10:13
underneath our letters they're typing. If we don't have a number pad, sometimes the numbers are on our different letter keys. It seems like our shift, our function keys held down well, how why's that happening? What are some of the causes of that stickiness?
10:26
Well, we may have a toggled function or num num lock key on. Some of our laptops, especially our large, are smaller. Laptops
10:35
are smaller laptop still include a separate number pad. So on their keyboard we have all of the standard keys and then, under certain keys, may have a certain letter and then underneath it on the same key. There's a number that's in
10:52
a different type of thought are rather a different color font. So the all of our keys, all of our letters on our different Kate Keys are white, so black keys with white ink for the letters and then on a select number of our keys. It's an orange ink for the letters.
11:11
This is letting us know that there's some way on our computer. There's some way on our laptop
11:16
that we can toggle a key and then just type on the letter keys as if they were a number pad. Now this may be a toggled function key or tall toggled num lock key. So we need to check our particular laptop manual or check the specifications for our particular laptop and see how we can untangle that.
11:35
And then, lastly, we have when they have sticky keys activated. Now, sticky keys isn't gonna make our keys that we type on our computer physically stick. But what it will do is we'll make our shift key act as if it's a toggle key rather than a hole down key. So when we press shifts will be able to type a few letters
11:54
as if we're holding, downshift
11:56
and then press shift again rather than having to hold down shift and then type a couple letters and then release shift. This may occur if shift is tapped multiple times, or if in a row, or if shift is held down. And this mitad go are sticky keys. So we may get a props for this or it
12:16
if we've done it before and selected. Don't prompt me again that we may not get a prompt for this,
12:20
So we want to check as well and see if our sticky keys is enabled or is on in our computer settings.

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Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC
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