108 lines
2.2 KiB
Markdown
108 lines
2.2 KiB
Markdown
# TRB-1: Windows OS Issues
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Status: not started
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Domain:
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- 3.0 Software Troubleshooting
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Objective alignment:
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- 3.1 Troubleshoot common Windows OS problems
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## What You Need To Know
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Windows troubleshooting questions usually give a symptom and ask for the most likely next step.
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Common symptoms:
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- Blue screen of death
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- Slow performance
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- Frequent shutdowns
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- Services failing to start
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- Application crashes
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- Low memory warnings
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- USB controller resource warnings
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- System instability
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- No OS found
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- Slow profile load
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- Time drift
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## Memory Trick
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Use **B-S-S-A-D-P-T**:
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- **B**oot
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- **S**ervices
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- **S**torage
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- **A**pplications
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- **D**rivers
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- **P**rofiles
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- **T**ime
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Shortcut:
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- **A Windows symptom usually points to boot, services, storage, drivers, profile, or time.**
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## Symptom Matching
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No OS found:
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- Check boot order.
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- Check whether the drive is detected.
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- Check boot files and startup repair.
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BSOD:
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- Suspect drivers, hardware, memory, storage, or recent updates.
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- Use Event Viewer, Reliability Monitor, and memory/storage diagnostics.
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Slow performance:
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- Check Task Manager for CPU, memory, disk, and startup load.
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- Check available disk space.
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- Review recently installed apps.
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Services not starting:
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- Check Services console.
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- Check dependencies.
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- Review Event Viewer.
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Slow profile load:
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- Suspect large profile data, network profile issues, login scripts, or domain connectivity.
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System time drift:
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- Check time zone, CMOS battery, and time synchronization.
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## Commands To Know
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```powershell
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sfc /scannow
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```
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Checks protected Windows system files and attempts repair.
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```powershell
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DISM /Online /Cleanup-Image /RestoreHealth
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```
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Repairs the Windows component store used by SFC.
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```powershell
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chkdsk
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```
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Checks file system status.
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```powershell
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eventvwr.msc
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```
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Opens Event Viewer for logs and error clues.
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```powershell
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perfmon /rel
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```
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Opens Reliability Monitor for a timeline of failures.
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## Exam Clues
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- If Windows cannot find an OS, think boot order, missing boot files, or failed drive.
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- If the system fails after a driver update, roll back the driver or boot into Safe Mode.
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- If apps crash after system corruption, use DISM and SFC.
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- If performance is slow, gather evidence before changing settings.
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