Windows 10 For Dummies: https://amzn.to/2LC5aj0
Windows 10: The Missing Manual: https://amzn.to/2RfN6AO
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1. Open the Start button, and select Settings and then select Update & Security. (22s)
2. Select Recovery and in the Advanced Startup section, Click on Restart Now. (36s)
3. On the Choose an option screen. select Troubleshoot , Click Advanced options, Click Startup Settings, Click Restart. (1:25s)
4. After your PC restarts, you'll see a list of options. Press the 4 or F4 key for Safe Mode. To access the Internet, press the 5 or F5 key for Safe Mode with Networking. (2:07s)