Summary
This section discusses troubleshooting system errors. Details include:
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Causes of errors, lockup and system crashes:
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Software bugs (errors in an application, the operating system, or driver code)
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Corrupt or missing operating system files
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Incorrect, corrupt, or incompatible device drivers
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Overheated hardware
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Failing hardware (memory, hard disk, or other component)
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Suggestions for basic troubleshooting:
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Identify the conditions when the error occurs
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Write down any error messages, and check Event Viewer for recent events
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Start with recently installed or updated hardware or software
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Update operating system files, applications, and device drivers that might be the cause
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Do an inspection of your hardware
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Run utilities to diagnose hardware components
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Common problems and causes
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Startup modes:
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Repair Your Computer
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Safe Mode
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Safe Mode with Networking
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Safe Mode with Command Prompt
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Enable Boot Logging
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Enable VGA Mode
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Last Known Good Configuration
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Disable automatic restart on system failure
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Disable Driver Signature Enforcement
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Recommendations to troubleshoot startup errors
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Common startup errors:
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System does not power on
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System power on but no display
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Corrupt MBR or partition table
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Corrupt boot sector
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Inaccessible boot disk
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Missing or corrupt file
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Corrupt system hive
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Bluescreen or system hang after Windows splash screen shows
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Service fails to start
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Corrupt or missing DLL or system file
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Device fails to start
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Error code 4
Students will learn how to:
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Diagnose and correct errors with system power.
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Diagnose and correct system component errors.
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Recover from partition and boot record errors.
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During startup, access the advanced boot menu.
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Choose advanced boot options to customize how the system starts and to correct problems.
A+ 220-802 Exam Objectives:
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4.6 Given a scenario, troubleshoot operating system problems with appropriate tools.
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Common symptoms
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BSOD
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Failure to boot
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Improper shutdown
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Spontaneous shutdown/restart
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RAID not detected during installation
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Device fails to start
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Missing dll message
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Services fails to start
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Compatibility error
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Slow system performance
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Boots to safe mode
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File fails to open
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Missing NTLDR
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Missing Boot.ini
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Missing operating system
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Missing Graphical Interface
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Graphical Interface fails to load
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Invalid boot disk
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Tools
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Fixboot
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Recovery console
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Fixmbr
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Sfc
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Repair disks
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Pre-installation environments
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MSCONFIG
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DEFRAG
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REGSRV32
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REGEDIT
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Event viewer
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Safe mode
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Command prompt
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Emergency repair disk
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Automated system recovery
Lecture Focus Questions:
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What are the most likely problems if you hear a series of beeps when the system powers on and there is nothing on the monitor?
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How would you correct the problem of a corrupt MBR or partition table?
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What symptoms might indicate a corrupt or missing boot sector?
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How would you troubleshoot a corrupt system hive?
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What are the most common causes of errors when the system hangs after the Windows splash screen shows?
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When you receive an error about corrupt or missing DLLs or system files, how can you verify the integrity of the system files and replace damaged or missing files?
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What are the most common types of crashes?
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What types of things should be recorded when a crash occurs? Why is this so important?
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What sources are available for reference if common troubleshooting doesn't provide an answer?
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How can driver rollback help you recover from system instability problems?
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Which type of components does Windows Reporting monitor for errors?
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When you select the startup mode of Last Known Good to restore the registry to the last working configuration, where does the operating system pull the configuration information from?
Video/Demo Time
 13.7.1 Troubleshooting Lockups 16:08
13.7.3 Boot Options 1:52
 13.7.4 Using Advanced Boot Options 14:55
13.7.6 Startup Errors 20:18
Total 53:13
Lab/Activity -
Troubleshoot System Startup 1
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Troubleshoot System Startup 2
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Troubleshoot System Startup 3
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Troubleshoot System Startup 4
Number of Exam Questions
21 questions
Total Time
About 105 minutes
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