Time
5 hours 33 minutes
Difficulty
Beginner
CEU/CPE
3

Video Description

Motherboard, RAM, CPU and Power Issues Part 3 Our next lesson examines intermittent device failures, fans, and indicator lights issues. For this segment we discuss how failures can occur and what steps you would take to resolve them. An intermittent device failure can be caused by bad connection or power failure. After completing this lesson, you'll know what to look for and how to confirm power or connection issue. You'll also learn about pin connectors to the motherboard, how they may cause a device or the motherboard itself to fail, what you can to as a repair. And you'll come to understand the importance of indicator lights, and how they advise of success and failures

Video Transcription

00:04
next, we have intermittent device failure. So when we're talking about intermittent device failure, we're talking about everything from our keyboard or mouse, not working all the way to our computer crashing or our computer having some issues and not being able to load properly running application properly. Everything from our small devices, like our keyboard and mouse,
00:22
everything to our large devices, like our hard drives or our computer itself.
00:27
So we may have a bad device or bad connectors. So we made our keyboard or mouse may be going bad. Maybe there's a component inside, say, like the wireless mouse. Maybe the battery used to be changed. Maybe the USB dongle is not plugged in properly, so we need to check the connectors. We need to check the device itself to make sure it's still good.
00:46
If we're talking about our computer as a device,
00:48
maybe our memory is going bad or we have a failing Dr. If we're having some intermittent issues and maybe related to memory problems, maybe a memory module or RAM is going bad. Or maybe our RAM slot is having some issues or maybe even the drive that we're running our operating system on is starting to fail, so we want to check those two as well.
01:07
And then we may have improper Dr drivers or may have certain application issues.
01:12
So if our device utilizes a particular driver or if it utilizes a particular application toe work with our computer, say, if we have a particular application which controls printing for our printer or if we have an application that helps us to be able to scan from our scanner
01:30
or even just a driver, that allows us to use a webcam with our computer,
01:34
we may have a driver or application issue, and we need to take a look at those drivers, possibly update to a new vert newer driver, or roll back to an older driver. Or maybe uninstalling reinstall an application that controls this device in order to get it working properly again.
01:49
Then we have our fans spin, but we have no other power. We press the power button on our computer and our fans start spinning on our computer, but our computer doesn't come on. There's no other power to our computer. Well, this is me because of a motherboard failure or a motherboard connector failure,
02:07
these kind of switched in order that we want to check. We don't want to replace our mother board before we check the connectors to make sure that they were good. So when we're connecting our power supply to our mother board, we have a main motherboard power connector, maybe a 20 or 24 pin connector. And this connector may be loose,
02:24
maybe inserted incorrectly, or possibly even. Maybe the connector itself is bad, and we need to check it.
02:32
So we wanna check that connector, use our power supply tester. We wanna make sure it's firmly in the motherboard and if so, that we may have a motherboard. More motherboard failure on our hands. Maybe if our fans air spinning, that means our power supplies giving power. But there's nothing else going on with our computer.
02:50
We may have our motherboard failing. The motherboards circuitry may have gone bad, and so our device isn't starting up.
02:57
The power can't get from the power connector when we plug it in our motherboard to the other devices on our computer in order to start booting our start up our computer.
03:07
And then we had our indicator lights are indicator lights are those front lights on our computer face plate that will show if our heart show everything from if our hard drive is spinning. If our computers on, maybe if we're having some processes that are running.
03:23
So if we have some problems with our indicator lights, maybe our indicator lights just flash when we press the power button on our computer,
03:29
um, then we may have a bad power supply. So we press the power button on a computer. The indicator lights come on for just a second. Then they go off. We may want to check our power supply. We may also want to check our jumper settings.
03:40
Maybe the jumpers that connect our indicator lights are front panel to our motherboard aren't set correctly. So we want to check those. And especially if we're not getting any indicator lights or were not able Thio Power computer with our indicator, our power button. We want to make sure that those jumpers or set correctly and they're connected on there
04:00
and we may have
04:02
are indicated. Rights may also let us know when we have heavy hard drive usage. So if we're having a very heavy hard drive, uses our hard drives to reading and writing a lot. We may have a hard drive indicator light on our computer, and it's just flashing continuously. And that may just be an indicator that are that are hard drive is having some very heavy usage.
04:20
Now, over here, we have our no power situation. Well, we press the power button on our computer were not getting anything. We're getting no power. Well, this may be because of a power outage. Our first thing we want to check. I want to make sure we're getting power to that outlet where our computers plugged into. Maybe our power cable, the power cable may have a short in it.
04:39
The power cable may not be plugged in all the way.
04:42
S o you want to check that power cable and make sure it's functioning properly? We may have a bad not turned on or improperly voltage switched power supply. Our power supplies can go bad. Many power supplies have a power switch on them that we may need to toggle toe on.
04:58
And ah, lot of our power supplies actually have a voltage selector switch,
05:01
depending on whether we're in America or depending on whether we're in Europe, so we need to make sure that voltage selector switch is toggled appropriately so that we get power to our device.
05:14
Then we have overheating issues. Overheating issues we talked a little bit about before. Overheating can occur from having a dusty or dirty computer internals, maybe our computer system, a location where gets dusty a lot. We don't clean it out. We haven't blown it out in a while, so it doesn't have proper ventilation inside, and it isn't. It's overheating
05:31
we may be having. We may be over clocking our processor,
05:35
maybe purposefully. We're trying to push our processor to the limits, and this is overheating the processor. And rather than damaging the processor by running it too hot, our computer shuts down when it overheats. Or we may have bad thermal paste. Our thermal paste on our processor that helps transfer the heat from the processor to our heat sink
05:56
may have dried up may be going bad, and we may need to replace that
05:59
we may have poor ventilation or bad fans in our computer. Maybe the location where we have our computer isn't conducive to good air circulation, so the computers just sitting there building up heat.
06:10
Maybe our fans inside our computer aren't fully running. Maybe they're damaged. Maybe they have something in their way. Or maybe they just don't have the power connector plugged into the motherboard or plugged into
06:21
our power supply. So if our fans aren't running there pushing that air circulation through our computer, our computer temperature inside just heats up and heats up and heats up until it finally reaches a point where our computer determines that if it continues to heat up this rate, if it continues to maintain this temperature, it's gonna it's gonna have damage to its hardware.
06:40
So it shuts down in order to cool down and prevent
06:43
this damage.
06:45
And then, lastly, on this section we have loud noise.
06:50
A loud noise could be everything from a day and not spending properly. We may hear a loud grinding noise inside the computer and that maybe our fan just has there's a connector that's loose and we haven't had. We don't cable manage it properly in our computer.
07:05
So our Fanis spinning and that connectors just hanging there next to the fan. It's just tapping it over and over and over and hitting it a lot.
07:11
Our fan maybe spinning and the blades maybe a little bit off and grinding against the outer casing up that the blades air sitting in. So sometimes all we may need to do there is just unplug our computer, reach inside that fan and then just spinning a little bit with our fingers. Maybe
07:30
break off some of the plastic that's inside and inside of that
07:34
Ah, that fan casing to spend our fingers around there and just help smooth that out a little bit to keep it from grinding on their help, recede it. Or maybe just even replace that fan. If the fan eyes, the fan has gone bad and we determined that we need to replace it, Um,
07:50
it could be a grinding hard drive. Are grinding hard drive or grinding optical drive. There are gears in both of those devices. The both of those devices do have spinning and moving parts, so either of those may have made grinding, maybe making noises Loud. Noises inside our computer are limited
08:11
to the parts that make noise because
08:13
they need to be able to move. They need to be able to hit something or grind or do something in order to make a noise, and our computer doesn't have too many moving parts. It's not too mechanical. Ah, but our fans and our hard drive and our optical drive are typically going to be what we can limit our our noises to inside our computer.
08:31
Also, our fan may just be spending. One thing that it mentioned earlier is our fame may just be spending very, very fast
08:39
if our computers starting to overheat. If our computer for over clocking a processor, we're running some really intensive programs and our computers tryingto prevent from overheating than it may be very spinning very, very fast. So if that's the case, then we may want to check all of our fans. If all of them are functioning properly and all of them are working,
08:58
then we may want to refer to our overheating section
09:01
and see why our fans are Wire Computer might be overheating as to why our fans might be spinning very, very fast

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Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC
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