If your computer is freezing at the boot, and you are not succeeding in going beyond the troubleshooting screen, like you have tried all options there, and nothing works, you can try the freezers page here, and all those strategies, including chkdsk, and, if that still doesn't work, you will probably need to reinstall Windows 10. The good news is that MS became smarter on this version, as if it had been my suggestion, and you now do not need to format your disk again. The bad news is that you may end up losing all your files, and programs for simply forgetting to unplug your USB after it is reinstalled. I have just done that! Poor me!
To make a USB that you can use for that purpose, you go to the own MS, and get a program called Media Creation Tool: Media Creation
You will need a blank USB disk of at least 4 Gb. It will probably take you 30 minutes after you have downloaded, and installed the tool to get the USB ready for action.