Tech

Troubleshooting Operating Systems–NETWORKING ESSENTIALS—CompTIA A+ (220-1001) A-PLUS Certification Prep Course Notes

Troubleshooting Operating Systems

  • Windows Recovery Environment
    • WinRE (Windows recovery environment)
      • WinRE provides access to essential troubleshooting tools
    • WinPE (Windows pre-installation environment)
    • Advanced options offer System Restore, System Images, & more
    • Command Prompt option opens the Windows Command Shell.
  • Advanced Startup Options
    • To get to ‘Safe mode’ options in Windows 8/10, select option in ‘System Configuration’ for Safe boot.
    • Alternatively, intentionally crash your system several times in a row to get Advanced options.
    • ‘Startup Settings’ offer debugging, boot logging, Safe Mode, & more.
  • Troubleshooting Boot Problems
    • A black screen on a booted computer often indicates a video driver problem.
    • Get to Safe Mode & try “Roll Back Driver” or “Update Driver” in Device Manager.
    • Other errors like no boot device; check boot order in System setup;
    • Major failure after installing a new device? Uninstall the device and try again.
  • Troubleshooting at the GUI
    • Try rebooting when you encounter a startup problem.
    • Check the logs in ‘Event Viewer’ in ‘Safe Mode’.
    • Try ‘Autorun’ from ‘Sysinternals’ for stopping programs that land on boot.
    • Create a new user account & copy old profile to try to recover from corrupted profile.
  • Troubleshooting Applications
    • Try ‘Task Manager’ to find & kill programs hogging CPU or disk with a slowly running computer.
      • System running slow (and not due to Malware)
    • With application crashes, try repair or reinstallation.
      • Applications blowing up
    • With services that fail to start, start it manually in ‘Services Administrative Tool’, or check ‘Event Viewer’ for details.
      • Problems with services
  • Kernel Panic
    • Kernel Panic means the OS is crashing and can’t recover–shows BSoD.
    • Most BSoDs caused by hardware compatibility–try updating drivers.
    • Check ‘Event Viewer’ in ‘Safe Mode’ for clues.
    • Kernel panics can manifest by:
      • SPoD (Spinning Pinwheel of Death)
      • BSoD (Blue Screen of Death)