StudyToCert

All certifications / A+ Core 2 / Lessons

CompTIA A+ Core 2 220-1202 · Domain 3: Software troubleshooting

Windows fixes: reboot, restart services, uninstall/reinstall/update apps, add resources, verify requirements, sfc and DISM, repair Windows, System Restore, reimage, roll back updates, rebuild the user profile

▶ Watch the overview video

Last reviewed September 30, 2026 · Leer en español

Once you have identified a probable cause, you need to choose a fix. The guiding rule is to try the least disruptive fix that addresses the cause, then escalate to more drastic options only if needed. A reboot costs the user a minute; a reimage can cost a day. Before anything that could lose data, back up the user's files, and document every step in the ticket so the next technician knows what was tried.

Free account

Keep reading for free

Create a free StudyToCert account to read the rest of this lesson: 7 more sections, 7 key terms, a real-world example, an exam tip and self-check questions. Every lesson, lab and practice test is free with an account.

Sign up free Log in

Study A+ Core 2 for free
A week-by-week plan with every lesson, quizzes, checkpoint tests, a practice exam and hands-on labs.
Open the A+ Core 2 study plan