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
- Instead of your Google result,
your browser goes somewhere else
Use an anti-malware/anti-virus cleaner.
restore from a good known backup
Problematic apps
– Apps not loading
– Slow app performance
Restart the phone.
Stop the app and restart.
update the app
App fails to close or crashes
Restart the device.
update the app.
delete and reinstall the app.
app does not update to a new version
check the store to manually upgrade.
restart the device
Device fails to update
check available storage.
check download bandwidth.
try a different network connect.
reboot.
battery life issues: bad reception. Aging battery.
disable unnecessary features.
check application battery usage.
a device reboots during normal operation.
check the OS and app versions.
perform a hardware check.
contact tech support for options.
intermittent connectivity
– Move closer to access point
– Try a different access point
no WiFi connectivity
– Check/Enable WiFi
– Check security key configuration
– Hard reset can restart wireless subsystem
