Troubleshooting windows Flashcards
Bluescreens and frequent shutshowns
*Use Last Known Good, System Restore,
or Rollback Driver.
– Try Safe mode.
*Reseat or remove the hardware
– If possible.
*Run hardware diagnostics
– Provided by the manufacturer.
– BIOS may have hardware diagnostics
Sluggish perofrmance
*Task Manager
– Check for high CPU utilization and I/O
*Windows Update - Latest patches and drivers.
*Disk space - Check for available space and defrag.
*Laptops may be using power-saving mode
– Throttles the CPU.
*Anti-virus and anti-malware - Scan for attackers
Boot errors
* Can’t find operating system
– “Operating system not found”, “Missing operating system”
* Boot loader replaced or changed*
– Multiple operating systems installed.
*Check boot drives - Remove any media.
*Startup Repair.
*Modify the Windows Boot Configuration Database (BCD)
– Formerly boot.ini
– Recovery Console: bootrec /rebuildbcd
Missing NTLDR
The main Windows boot loader is missing.
*Run Startup Repair or replace manually
and reboot
*Disconnect removable media
Missing operating system
Boot Configuration Data may be incorrect.
*Run Startup Repair or manually configure
BCD store
Boots to Safe Mode
Boot Configuration Data may be incorrect.
*Run Startup Repair
“One or more services failed to start”
– Bad/incorrect driver, bad hardware
– Try starting manually
– Check account permissions
– Confirm service dependencies
– Windows service; check system files
– Application service; reinstall application
Device not starting
– Check Device Manager and Event Viewer
– Often a bad driver
*Remove or replace driver
Application stops working
-may provide an error message
-may just disappear
- Check the Event Log
– Often includes useful reconnaissance - Check the Reliability Monitor
– A history of application problems
– Checks for resolutions - Reinstall the application
– Contact application support
Your computer is low on memory
– Applications need RAM to run
– More applications need more RAM
- Close large-memory processes
– Check Task Manager - Increase virtual memory
– More room for swapping applications
– System > About > Advanced system settings >
Performance > Settings > Virtual memory
The controller does not have enough resources for this device.
– The endpoints are these resources
- Move the device to a different USB interface
– USB 2.0 interfaces might support a larger
number of endpoints - Match the USB interface to the device capabilities
– USB 2.X devices or USB 3.X devices
– More endpoints for all devices
General system failures
– The endpoints are these resources
- Time for a full diagnostic - This could be anything
- Hardware diagnostic
– Most systems include manufacturer diagnostics
– Also run storage and memory checks - Check the operating system
– Run SFC (System File Checker)
– Perform an anti-malware scan
Browser push notification messages
Disable browser notifications.
Scan for malware
False antivirus message
specific anti-malware removal utility or techniquie
renamed system files.
files disappearing.
file permission changes.
access denied
use a malware cleaner or restore from known good backup
