Software and Trouble Shooting: troubleshoot common Windows OS problems Flashcards
CompTIA A+ 220-1102 Exam Criteria
How can you troubleshoot Frequent shutdowns?
Spontaneous shutdown / restart – This is usually either a hardware or software issue. If the system reboots after being on for a certain amount of time and seems to reboot at the same point every time, you probably have a hardware issue or overheating issue. If the system reboots when you launch a certain application or certain hardware, then the problem is with the software or hardware you are trying to launch. Examine the log and boot files to see if you can see any problems. Use Safe Mode to correct incompatibility issues. Also, make sure that you remove all viruses and malware, because these applications can cause spontaneous reboots.
What can you do to remediate frequent shutdowns?
Update/rollback/reinstall driver
Example: Right-click the Start Icon > Computer Management > Device Manager – Right click into properties of the software
Example: Control Panel > System and Security > Administrative Tools
Update/roll back drivers – Original Driver that is installed in the first place
What is BSOD?
A STOP error, also known as a Blue Screen of Death (BSOD), is a proprietary crash screen for the Windows operating system. The BSOD will display an error message with a hexadecimal code that indicates what is wrong. Most BSOD errors can be researched in Microsoft’s Knowledge Base. You should also examine system log files to see if you can discover the problem. In most cases, a BSOD occurs because of a change that has been made to the system. If a simple reboot does not resolve the BSOD, then you need to roll back your system changes.
What can you do to remediate BSOD?
Check logs
Example: Right-click the Start Icon > Event Viewer – Windows log >Sytem location (you can filter the current log on the right panel – Tick box on Event level: Critical / error
Update/roll back drivers
Repair Windows
Example: Boot to Windows 10 Installation Media > Repair your computer > Troubleshoot > System Restore
Roll back updates
Example: Boot to Windows 10 Installation Media > Repair your computer > Troubleshoot > Uninstall Updates
What is the Mac version of BSOD? (Proprietary Screen Crashes)
The Windows and Macintosh operating systems both have proprietary screen crashes. The Pinwheel of Death (PWOD) is a spinning multicolored pinwheel mouse pointer that signifies that the Apple computer is running low on resources. First, try restarting the computer. Then you can try closing open applications, checking Safari settings, performing an Archive and Install process. If none of these solutions work, try adding memory, freeing up disk space, or deleting problematic application .plist files.
What can you consider when your OS fails to boot?
For any type of computer, you should first try the obvious: make sure the display is operating and check the power to the CPU. If obvious problems are ruled out, this issue is usually caused in Windows when boot files are missing or corrupt. You should replace the missing or corrupt boot file if that is the problem. For Apple computers, you might need to reset the System Management Controller (SMC.)
The bootrec.exe utility is used to repair the master boot record (MBR), Boot Configuration Data (BCD) store, and the boot sector. To run bootrec, you must boot the computer from the Windows installation media or USB recovery drive and choose Command Prompt from the Advanced Recovery Options.
The two primary commands that you need to understand are bootrec /fixboot and bootrec /fixmbr. The fixboot command writes a new boot sector. The fixmbr command checks and repairs the master boot record.
What can you do to remediate sluggish performances?
Verify requirements (of the appllication)
Add resources
Reboot
Task Manager – find the application that is using the most resource in CPU (usually will see in red) can find via Microsoft documentation of the purpose of it.
What command tool / Utilities can you use for boot problems?
System File Checker (sfc /scannow)
System Configuration (msconfig.exe) this is also in your administration utilities
Selective start up – load system services – load start up items – Use original boot configuration.
Startup Tab - (in task manager) - You can disable programs on boot start ups
Diagnostic Start up – does not load up third party drivers
msconfig.exe > Advanced Startup Options > Startup Repair
Settings > updates & Security > Recovery (on the left pane) > Reset the PC. If you can’t get into the PC you can use windows installation disc and choose repair PC
What utilities can you uses when services fail to start?
Services fail to start – Use the Event Log (Event Viewer) to determine which service has failed to start and to research any issues that may have led up to the service not loading.
Try to restart the service using the Services console. Also note that some services are dependent upon other services running. Check the service dependencies to ensure that all the services are running that are required.
You can also use check services in services.msc - stop and start service
What steps can you take when applications are crashing?
Applications crashing:
Startup task manager – find out which apps is causing the application and end task.
Uninstall/reinstall/update applications – Repair installation (right click start icon and select app and features)
Example: Settings > Apps > Apps and features
Example: Control Panel > Programs > Programs and Features –change button – Options to repair.
What are other considerations can you consider when applications are crashing?
This problem can be caused by a malware infection or memory and page file issues. Perform a malware check. If this does not resolve the problem, you may need to re-install the application (or check to see if the vendor has released an update)
What are some factors you need to consider when you have low memory warnings?
A low memory warning signifies that your device has little to no memory left available for it to run programs or continue operating. These memory warnings can occur as the user has too many programs open simultaneously, are using a program that is taking up too much memory space causing other programs to crash, has background programs operating without out their knowledge, or has too small of a paging file.
Users should examine what programs are operating, close any unnecessary program sizes, and check their paging file size. If these problems persist, the user’s device may be infected with unknown malware, which will need to be removed or might have to upgrade their RAM.
What are some steps you can follow on low memory warnings?
Low memory warnings - (holding memory running when you close the app or continues to consume memory / memory leak) find the application and uninstall the application.
such as – you actually might have low memory
Virtual memory running low and uses simultaneously another application and dumps the other application into hard drive temporary and does not have enough memory in the disc. This can also indicate low memory.
Upgrade the physical RAM
What problem will arise with a USB Controller resource warning?
This problem can occur when attempting to connect too many UBS 3.0 devices at the same time causing the device to be unable to allocate the resources needed to utilize each device. The simplest method to solve this problem is to use a host that can operate the desired number of USB endpoints needed or by reducing the number of simultaneously active USB 3.0 ports. Many USB 3.0 devices can work on USB 2.0 ports as they are backward compatible.
What steps can you take when you receive USB controller resource warnings – host controller gets corrupted?
Reinstall Universal Serial Bus Controllers
Example: Type devmgmt.msc in the Search field – uninstall device on host controller and go and scan for hardware changes to reinstall.