Time
5 hours 33 minutes
Difficulty
Beginner
CEU/CPE
3

Video Description

Troubleshooting Operating Systems Part 5 And lastly we complete this series of lessons with discussion on registry function such as regserve and regedit and why you would need to use them, and more importantly, the importance of how to use these tools as accurately as possible. The event viewer logs and records all Windows OS and system events. You'll learn how to use this to time stamp events that may have triggered or contributed to a failure of some type whether it's hardware, software or performance related, the benefits of working in Safe Mode to diagnose specific problems and safely perform repair or recovery tasks in an environment where Windows allows only the barest functional services to run. You'll learn when running in Windows GUI vs. CMD has its advantage, how to create an emergency repair disk and why it would be needed and what specific tasks can be accomplished when using it.

Video Transcription

00:04
next up, we have regs, sort of 32. This application this lets us the utility lets us to register an unregistered, different bl l's. We talked about how we may receive errors related to missing or corrupt dynamic linked libraries,
00:21
also known as the L L's. So if we are uninstalling an application or we're trying to register or unregistered DLL that maybe malformed, missing or corrupted, we may pull up this utility. And we may use that in order to get that deal l that dynamic link library replaced or
00:40
just go ahead and uninstalled application.
00:42
Next, we have Reg at it. Reg Edit lets us edit our registry. Our registry we've talked about a little bit before is a location where our computer stores, settings and values and keys related to different settings that it has for our applications for our deal. L's for our operating system for user's.
01:02
Our computer needs a place to store these settings and
01:06
stores. The mole on our registry now registry may become corrupt. We, Nate may need to do some registry modifications
01:11
if we're experiencing issues and as part of our troubleshooting. So we'll pull up Reg at it. We do need are. We do need permissions in order to perform this function. We need permissions in order to perform system wide registry changes.
01:26
But we always want to make sure that before we perform any edits and our registry before we perform any functions with Reg Edit, we need to back up our current registry. We need to back up those settings in case what we do doesn't quite work out. We can back up to those previous settings and before we changed our settings and started having even worse issues.
01:46
Next, we have event viewer of in viewer allows us to view warnings and errors that have occurred on our computer weaken. See information as faras What prompted, or what caused that error or warning to pop. If we receive an error that a certain service didn't start or certain deal l didn't load and we don't get much more specific than that.
02:04
Then we can check an event viewer and see a bit more specific about why that error came up
02:07
win and occurred and what may have pushed that air? What may have prompted that air
02:12
event viewer is also good for checking who's logged in it allows us to see if we tell it. We want to audit this information. We can see when users have attempted to log in when users have put in unsuccessful passwords or even when they put in successful passwords. There's a lot that we can audit
02:29
in our security settings and our application settings that we send to event viewer.
02:34
An event viewer is the place to check those settings.
02:37
Remember that we can use it, that viewer. It's one of those applications that we can use not only on our own computer, but we can open the event viewer console and weaken select to run event viewer on a remote machine in order to see what events may have occurred on that machine as faras its warnings and his errors.
02:53
Next up, we have safe mode. We've talked about safe mode as being a reduced functionality form of starting our computer. It allows us to perform some troubleshooting and perform some diagnostics in order to get a better idea of why our computer isn't starting properly.
03:07
Safe mode may start with reduced service is and make start without loading full versions of drivers or even certain drivers at all, and they also start with a reduced resolution view so that we can make sure that we are absolutely minimizing what may be causing an issue on our computer and then slowly
03:27
from safe view up,
03:28
start adding service is starting. Different service is running applications that utilize certain drivers in order to slowly start eliminating and slowly start
03:38
particularly particularly targeting where a problem maybe
03:44
safe mode isn't just a single mode that weaken boot into. We can start safe mode with several different options. We can start safe mode with networking safe mode with networking allows us to start safe mode and have a network connection. We can try to connect two servers we can try to connect to the Internet.
04:00
So safe mode with networking will allow us to still have that network connection,
04:04
but again still be in safe mode while we have that network connection.
04:09
Safe word safe mode with command prompt abbreviated. Here, CMD allows us to boot our computer to a command prompt Terminal two of command prompt console. If we tried to boot safe mode as it's standard form before and that failed, we may want to try safe mode with command prompt in order to
04:29
be able to boot to an even more minimal version of safe mode
04:31
with a command prompt interface. So we can use that to search. There are computer and possibly troubleshoot why we're still not able to boot even into safe mode.
04:42
And then, lastly, we have safe mode, low resolution
04:46
safe mode. Low resolution is excellent if we're trying to diagnose possible video card or video driver issues. If our computers encountering problems where it can't display certain resolutions, we can't display our graphics to our screen, as we'd like to. We may need to boot into this low resolution setting so that we can modify a resolution,
05:05
display settings,
05:06
maybe uninstall and reinstall a display or video car driver so that once we
05:13
finish our troubleshooting, once we finish our changes and safe mode war resolution mode, weaken boot into our normal boot mode and then not have any of those issues with our video card or drivers because we change those and we fix them in our safe mode with low resolution.
05:27
Now, I mentioned CMD before CMD is short for command. Prompt command prompt is essentially are black terminal that will start, and it allows us to interface with our computer in a non graphical
05:42
user interface
05:44
in order to run through command. Prompt. Everything we're doing is text based. If we're running a command such as defrag or disk partition or paying or I p config or fix boot or fix nbr, we can run these through this command prompt. Now, this command prompt again
06:00
isn't going to be a graphical user interface. There's no drop downs to select.
06:04
There's no radio buttons to choose and hit. Apply okay on
06:10
command. Prompt does have certain help files. We could type of command and then we can type board slash question mark. And this will give us some help information as faras what this command does, how we can properly type out this command the proper syntax for this command. But when we're using command prompt, we need to have a little bit more technical knowledge.
06:29
We may need to do a little bit of research
06:30
in order to know how we can exactly use command prompt and how we conform at our commands to run properly.
06:36
Next, we have our emergency repair disk. Now, emergency repair disc is going to be a disc that we use with our Server 2000. This is going to be a utility that allows us to perform some emergency features, much like our repair disk for Windows seven or repair discs for Windows X P. So for you encounter any issues with booting,
06:56
we can run our emergency repair disc, and it's him
06:58
to fix certain files, fixed certain registry keys. That may have some problems that we can't get into our computer to manually change those. So Windows has a nice little utility in its emergency repair disc to try to take care of those for us.
07:12
And lastly, we have our automated system. Recovery Now are automated. System recovery is a nice little application that if we are down to the wire and we need the data off of our drive and we accept the fact that none of our other steps have worked,
07:29
we've tried our fixed boot with trying to fix nbr. We've tried
07:32
to just run our compared repair disc, and we've tried our system file checker, and no matter what we do, we just keep having problems. We still can't boot. We can't get into safe mode. We can't get into safe mode with command prompt. So we say, OK, let's try our automated system recovery. What are automated system recovery is going to do is it's going to take our files
07:53
on our drive on her hard drive,
07:55
and it's gonna back those up. That's the first step
07:58
after it backs up our Dr.
08:01
It's going to go ahead, and it's going to format our drive, and it's going to try to reinstall Windows. So this is our last ditch effort to get back up and going with this same computer. So it's going to take that information is gonna take our files and folders that it can back it up,
08:20
attempt to reinstall windows, get a fresh slate
08:22
and, if possible, it's also going to apply. Or at least try to apply some system settings or system configurations that we had before. Maybe give us back our users and our groups and our desktop, and it may look a little bit similar to how it was before. But this is only if automated system recovery is able to pull those files
08:43
and is able to restore it. How it was before
08:45
so automated system recovery again it's gonna be one of those last ditch steps if none of our other manual or automated steps will work in order to get us back up and running with our boot of our computer. Automated system recovery may be our last ditch effort before we have to manually connect our dr
09:03
and pull files and back them up to a different dr
09:05
and then manually go in and format our drive and reinstall windows.
09:11
So thank you for joining us here today on cyber dot i. T. Today we talked about different operating system issues that we may encounter, such as not being able to boot having issues with different DLL. Zor service is not starting, and how we may be able to troubleshoot those and identify are common symptoms and use those symptoms to track down the underlying issues.
09:30
We moved on and then we talked about some of our different amazing tools that we can use in Windows
09:35
in order to recover our boot partitions in orderto fix our master boot record, or even just to diagnose different registry issues. By using our Reg edit, we can all and we also talked about our one of our last ditch methods, our automated system recovery. So hopefully this information was useful for you. You'll be able to take this information,
09:56
put it in your toolbox and use this as you go forward and work on your computer
10:00
and try to recover from different Windows issues or different operating system issues. So and hopefully we'll be able to see you here next time on cyber dot i t.

Up Next

Troubleshoot Critical Systems

Diagnosing system malfunctions and finding a solution is an important skill for help desk professionals to develop. Expand your knowledge of the troubleshooting theory in less than an hour.

Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC
Instructor