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Earlier course archive · Core 2 · Operating Systems · S01E122

Repair Techniques — SFC, Reimage, Rollback

When something breaks in Windows, there are several tools you can use to restore functionality, and this episode breaks them down step by step. We begin with the System File Checker (SFC), which scans and repairs corrupted or missing system files using known-good versions.…

CompTIA A+ August 17, 2025
Lesson122

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Lesson Focus

What this lesson covers

When something breaks in Windows, there are several tools you can use to restore functionality, and this episode breaks them down step by step. We begin with the System File Checker (SFC), which scans and repairs corrupted or missing system files using known-good versions. Next, we explain DISM and when to use it alongside or instead of SFC to fix more deeply embedded issues.

We also discuss more significant recovery options like rolling back updates, restoring system images, and using manufacturer-provided reimage tools to return the device to factory settings. These techniques are tested heavily on the A Plus exam and require not just name recognition but an understanding of when each method is most appropriate. This episode prepares you for questions involving system instability, failed patches, and critical file loss. Brought to you by BareMetalCyber.com.

Companion Books

Reinforce this lesson with the course books.

Use the study guide to organize the ideas from the audio lesson, then use the flashcards book for active recall and rapid review.