Chapter 16: Troubleshooting OS Systems Flashcards
Memory Leak
Application hasn’t closed, cleared, released resources properly
Restart Services
Run this if reboot isn’t possible
System File Check
sfc utility, will try to rix/restore system files from backup
Simple Troubleshooting Steps
Verify Requirements
Uninstall/Reinstall/Update apps
System File Check
Reboot
Windows Recovery Environment
Hold shift when restarting, also known as WindowsRE, suite of tools
Creating Bootable Media
Use Windows Media Creation tool to download and create a bootable device
Main Parts of Windows RE
System Restore - Need restore points created, disabled by default
Uninstall Updates - in case of a bad windows update
System Image Recovery (Reimage) - Need default image ready
Startup Repair (Repair Windows) - slew of repairs just on startup process
–Registry, Boot Files, System and drivers, rollsback updates and non-working drivers, runs chkdsk, memory test on RAM
Command Prompt - terminal
Reset this PC (Repair Installation) - total reset of windows
Command Prompt Steps to wipe a drive
run diskpart
list volume (shows volumes)
select volume “x” (selects volume)
(can also add, change, delete, manipulate RAID, mount/dismount, format drives)
clean - wipes all info off drive
Rebuilding a Profile (Registry method and Copy Method)
Through Registry or Copying
Registry:
1) Boot in Safe Mode
2) regedit with elevated priv
3) find ProfileList
4) find S-1-5 entry that matches target profile
5) double click “State” subkey
6) Set value to 0
7) Set RefCount to 0 (or create and set to 0)
Copying:
1) Safe mode
2) cmd elevated priv
3) “net user” command
4) Reboot
5) Create new user account w/ unique name
6) Copy contents from old “user” folder into new profile folder (one folder at a time)
7) Verify login works for new user
8) Repeat steps above but delete old account, rename new account correctly
Proprietary Crashes
Windows - BSoD
Mac - Pinwheel
Typically the result of bad drivers
Sluggishness
Try disabling startup apps in Task Manager
Questions to Ask during Boot PRoblems
What is displaying on the screen?
What do you hear?
Is everything plugged in?
Do you smell something weird?
Frequent Shutdowns
Disable fast startup
(Power & Sleep|Additional Power Settings|Shutdown Settings)
Disable sleep mode maybe
Apps Crashing
Low Memory, check processes in task manager
System Instability
Control Panel|Security and Maintenance|View Reliability History
Provides rundown of alerts and issues, based on categories
