YUNOVA · IT Help Desk
Module 11: Advanced troubleshooting
Windows Event Viewer troubleshooting
Key points
- Event Viewer logs System, Application and Security events.
- Filter by level (Error, Warning) and time to find the event behind a fault.
- Search the Event ID and source to learn what an error means.
Blue screen of death troubleshooting
Key points
- A blue screen shows a stop code that points to the cause.
- Recent drivers, updates or faulty RAM are common causes.
- Safe Mode lets you roll back a driver or update when Windows will not boot.
Reinstalling Windows and system imaging
Key points
- Back up user data before any reinstall.
- Bootable media can be made with Microsoft's Media Creation Tool.
- A system image restores a whole configured machine in one step.
Malware removal step by step
Key points
- Disconnect the infected machine from the network first.
- Run a full scan with up-to-date antivirus, using Safe Mode if needed.
- Change passwords afterward and reimage if the infection persists.