Troubleshooting Common Laptop Issues

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Time
12 hours 9 minutes
Difficulty
Beginner
CEU/CPE
12
Video Transcription
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>> This is lesson 15.5,
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troubleshoot common laptop issues.
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In this lesson, we're going to troubleshoot
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common problems that you'll find on a laptop,
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so let's go ahead and get started.
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LCD display Issues,
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sometimes you may come across
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a no display or a dim video display.
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Verify that the backlight is on.
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If that backlight is off,
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it may be barely visible,
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you may even have to get up really close to see
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if it's a image there
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or even use a flashlight to shine and
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check to see if you do see an image.
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On the older displays with a fluorescent type,
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if it would be backlight was out on those,
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the inverters would need to be replaced.
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Connect an external monitor to
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that device to see if you still get the same problem.
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If you don't, then you know,
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it is a problem with that monitor with a dim display.
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If the video is showing,
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it could be a bad LCD and of
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course that would need to be replaced.
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If you have flickering video,
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that could be a connector issue or bad cable or hardware.
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It is what you want to check
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when you have a flickering situation.
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Input issues, sometimes you have sticking keys on
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the keyboard or sometimes
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these keys are difficult to clean.
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The key caps are very delicate,
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so you have to be careful going in and cleaning those.
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Sometimes on different models,
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your manufacturer have specific ways
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of cleaning the keys on a keyboard.
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Sometimes you're going to have a ghost cursor
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or a pointer drift,
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this happens when the touchpad or
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the mousepad causes the cursor to move around.
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In some cases you would update
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the driver to fix this problem.
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The driver has a way of monitoring
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the cursor position and if it does fluctuate,
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it'll move it back or restrict the movement of that.
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Check the drivers if you're
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having cursor drift or pointer drift.
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A pointer drift is when the cursor
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is moving by itself or the pointer is moving by itself.
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The mouse pad or a touchpad can cause
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problems where the cursor is moving around.
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Update to drivers, this is
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a quick fix to fix that problem.
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The driver has a way of monitoring that cursor
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position and if it finds a string off,
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it can keep it retained in the same spot.
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Update the drivers to resolve that issue.
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Some keyboards don't have
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a numeric keypad on the right-hand side,
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like of the newer or bigger keyboards.
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Instead, they'll have numbers on some of the letter keys
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and if you inadvertently hit the Num Lock button,
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you can lock it where
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you want to type a letter and a number will appear.
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Verify that that Num Lock button
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is not locked and turned on.
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Wireless issues, your laptop
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has multiple antennas in the laptop.
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For the most part, most laptops have the antenas
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along the monitor screen or the LCD screen of the laptop,
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because it's the highest point of
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the laptop and you get better reception.
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If you're in a laptop and you're doing some work,
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you want to make sure that you're
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not interfering with these wires or you may
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not accidentally hit them that can cause
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wireless problems in the future.
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Sometimes if you're in a laptop,
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you'll see a Wi-Fi main or AUX or Bluetooth,
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there's various different wire cables
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for antennas for the laptops.
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If you're disconnected one of
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them by accident or inadvertently,
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you have no wireless connection or
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you have no Bluetooth connection.
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Check those connectors depending
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on where they're located and when they
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connect to the Wi-Fi card
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or the Bluetooth card on your system,
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check the manufacturer documentation
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to see where they're located.
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But check those connectors
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because a loose connector can cause
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intermittent problems or one
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could be unplugged altogether.
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Battery issues.
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A lot of times in laptops,
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you have problems with the particular battery.
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The laptops are not like desktop computers where
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we use them stationary and plugged into the wall,
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they're mobile so we want to carry them around with us.
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Therefore, we rely a lot on that battery.
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If you have a problem with your laptop battery,
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the battery not charging,
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where it may be losing capacity over time,
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the laptop charging hardware may be faulty,
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so you may want to check that.
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If you have no power,
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check the voltage and the outlet first then check
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the power adapter with
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the multi-meter because that could be faulty as well.
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Another troubleshooting step you can take is
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the master laptop reset,
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and this may vary depending on
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the particular model of laptop you have,
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but hold the Power button for 10 seconds.
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After that, you will unplug the adaptor,
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plug it back in and power it
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backup and see if that cleared your problem.
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Again, each laptop model may be different.
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External monitor issues.
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Sometimes you may be having
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a monitor plugged into your laptop and there's no,
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the video display, check the function keys,
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toggle between the LCD,
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the external monitor, and both.
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You can use both back-and-forth to make
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sure it's wrong key
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sequence or the cable may not be connected properly.
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Use another monitor, use
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another LCD monitor to plug
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into your device to see if that's the issue.
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We just covered different ways of
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troubleshooting common problems that
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you'll find on a laptop.
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Dim and a flickering display,
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sticking keys, intermittent or no wireless,
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battery issues,
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ghost cursor and pointer drift, just to name a few.
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That was it for this lesson,
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and we will see you in the next lesson.
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