4.0 Troubleshooting

4.6 Given a scenario, troubleshoot operating system problems with appropriate tools.

  • Common symptoms

    • BSOD

      When Microsoft Windows encounters a condition that compromises safe system operation, the system halts. This condition is called a bug check. It is also commonly referred to as a system crash, a kernel error, a Stop error, or BSOD. A hardware device, its driver, or related software might have caused this error.

      Blue Screen Of Death

      More on Blue Screen
      Demystifying the Blue Screen of Death

    • Failure to boot

    • Improper shutdown

    • Spontaneous shutdown/restart

    • RAID not detected during installation

    • Device fails to start

    • Missing dll message

    • Services fails to start

    • Compatibility error

    • Slow system performance

    • Boots to safe mode

    • File fails to open

    • Missing NTLDR

    • Missing Boot.ini

    • Missing operating system

    • Missing Graphical Interface

    • Graphical Interface fails to load

    • Invalid boot disk

  • Tools

    • Fixboot

    • Recovery console

    • Fixmbr

    • Sfc

    • Repair disks

    • Pre-installation environments


      The System Configuration utility (MSCONFIG) automates the troubleshooting steps used when diagnosing system configuration issues. You must be logged on as an administrator or as a member of the Administrators group to use the System Configuration utility.

      More on Msconfig

    • DEFRAG

    • REGSRV32


      Used to access and edit the Windows Registry.

      More on Regedit

    • Event viewer

      Event Viewer is an advanced tool that displays detailed information about possible issues and significant events on your computer. It can be helpful when troubleshooting problems and analyzing errors with Windows and other programs.

      The Event Viewer can be accessed through the Start Menu by first selecting Start, then the Control Panel. From the Control Panel window, select Administrative Tools, then Computer Management. From the console tree on the left side of the window, select Event Viewer, Event details will be displayed on the right side of the window.

      Windows Event Viewer

      More on Event Viewer

    • Safe mode

      Safe mode is a diagnostic mode of a computer operating system, using only default settings (VGA monitor, Microsoft mouse driver, no network connections, and the minimum device drivers required to start Windows). If a symptom does not reappear when you start in safe mode, you can eliminate the default settings and minimum device drivers as possible causes. Windows automatically initiates Safe Mode if it detects a system boot failure or registry corruption. Safe mode can be accessed manually by pressing the F8 key as the operating system boots.

    • Command prompt

    • Emergency repair disk

    • Automated system recovery


Exam Cram CompTIA A+ 220-801 Sixth Edition Study Guide   Mike Meyers All-In-One CompTIA A+ 220-801 Study Guide