Safe mode starts Windows in a basic state, using a limited set of files and drivers. If a problem doesn't happen in safe mode, this means that default settings and basic device drivers aren't causing the issue. Observing Windows in safe mode enables you to narrow down the source of a problem, and can help you troubleshoot problems on your PC.
If you need to exit safe mode, here's how:
- Press the Windows logo key + R.
- Type msconfig in the Open box and then select OK.
- Select the Boot tab.
- Under Boot options, clear the Safe boot checkbox.