Problems starting up a PC can be tricky to fix, since Windows hasn’t had a chance to load its arsenal of troubleshooting tools. Some people simply give up and reinstall Windows.
Startup Repair can prevent a time-consuming reinstallation by diagnosing and repairing problems that prevent Windows from starting.
Startup Repair is designed to start automatically if Windows detects a startup problem. For more information about using Startup Repair, and what to do if it doesn't start automatically, see Startup Repair: frequently asked questions.