Hello JeannetteBarber1, welcome to the Microsoft community, my name is Bruno Leonel, an independent consultant and I would be happy to help you.
I understand that you are having problems starting Windows on your RCA Cambio 10.1 and we are sorry for that. Below is a step by step guide to resetting your device to the default.
Reset an RCA tablet running Windows 10
If your RCA tablet runs Windows 10, reset an RCA tablet and it will also work as the ultimate troubleshooting solution.
Step 1. Turn off your tablet completely, then turn it on again. Hold down the "FN / function" button on the keyboard during startup while pressing the F9 button repeatedly until you see "Please wait".
Step 2. When the boot screen is displayed, select the "Troubleshoot" option and then "Reboot the PC". You will then see two options, remove files or completely wipe the device. The latter will erase all personal files and applications from your tablet and restore it to factory settings.
Step 3. Make a decision and the process begins when you see the RCA logo. The whole process will take 30 minutes to 1 hour, depending on the amount of data on your tablet.
I hope this helps, feel free to post again. We will be ready to help!