Chapter 19 / Troubleshooting Theory, OSs, and Security. Flashcards
problems in computers occur in 4 areas what are they/
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Computers hardware
OS
application or software program
computer user
what can we use if an integrated component fails?
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Expansion device ( USB, PC network adapter)
some of the problem can be solved by opening the case and pressing down on each socketed ship this is known as ____
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Reseating
what is BSOD?
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BSOD is short for Blue Screen of Death and is a full blue screen error message, it occurs when Windows fails to boot properly. this problem is because of a device drivers.
to solve the BSOD problem we need to try to boot windows in _____mode.
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Safe
because in the safe mode windows loads only basic drivers ( VGA video driver, keyboard and mouse) and when we are in the safe mode we can uninstall the driver we think is the problem.
Real Mode vs. Protected Mode( not in the book)
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If your computer is in real mode, software communicates directly with the computer’s ports and devices. For example, when you print a document, the software sends the data stream directly to the port that holds the printer. However, this paradigm doesn’t work in a multitasking OS. Imagine what would happen if multiple programs sent data streams to the ports simultaneously. Ports are dumb, and they have no ability to filter or arrange data streams to match the sending programs.
If your computer is in protected mode, the system’s ports and devices are protected from the applications that use them. The software thinks it’s sending data to a port, but it’s a virtual port. The OS is grabbing the data stream and managing it, to ensure that all applications have equal access and to ensure that data from each application is appropriately preserved.
how to properly shutdown computer.
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windows XP: start-turn off
windows 7/ vista: start-shut down
what is the first thing to check if you have a spontaneous shutdown/restart in your computer?
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check the sleep setting for hibernation and disable them to see if it make any deferens
if a device fails to start what would be the problem?
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it can be the device driver or the device it self.
- for the device we check and see if it is installed and functioning properly.
- for the driver we can roll back the driver and to do that we right click on the device manager-choose properties-on the driver tab click Roll back button.
Dynamic Link Library DLL
Most common types of errors you encounter with DLL files is that they mysteriously go missing, and you get a ‘so and so’ dll file not found error. There is however, no real mystery in this, the causes can range from removing an installed software to a bad sectors or corrupt disk to installation of a new software, so on and so forth. what to do to solve this problem?
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find a copy of the DLL on line or on a backup and replace it
So what exactly does a DLL file do?
the files are important for your Windows! There are lots of DLL files on a typical Windows Installation. Although you don’t directly deal with them, these files are important for all the other applications that you run on your system.
when there is a software problem always reboot the computer before trying to troubleshoot, True or false?
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True
what is a software conflict?
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installing a wrong ( old version) can cause conflicts with other already installed programs
GPF general protection fault can result in ____
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other programs to crash
when you perform a troubleshooting it will look for problems like___?
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virus, memory hogs, multiple users logged into the same machine……..
if no problem was detected and your system is slow, what should you do?
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delete programs that are never used
remove items from the startup
defragmenting the hard drive
disk cleanup to free some space
what do you need to do when the file fails to open?
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Recover the file from a backup.
What is the first thing to check when it is reporting that an OS is missing?
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check to see if there is no media in the machine ( DVD, CD)
What to do when the graphical interface is missing ( GUI)
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in Windows 7/vista go to System recovery option and choose start repair that you find on the windows repair CD or installation DVD.
Recovery Console
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One of the most useful tools for fixing problems in Windows 7 and Windows Vista is the Recovery Console
the Recovery Console is installed on a system by default. true/ false?
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false.
with Dell computer what can you do to bring your computer back to when it was when it was new?
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Repair Disk is what we need to do.
we can use the recovery CD set or DVD
what is Defrag
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Defrag places each part of a program together instead of scattered throughout the hard drive, allowing the read-write head to access the data faster on the hard drive.
how can we get to the disk defragmenter?
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in windows 7/vista go to start-All program-accessories-System tools-Disk Defragmenter. or go to Start and type in Defrag.
in windows XP open computer management and select Disk defragmentation or start-All program-accessories-System tools-Disk Defragmenter.
REGEDIT
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Registry editor
