Privacy and Security I have also found it to use a lot less ram and CPU usage and ts also nice to support open source projects and not mega corporations. But adblockers def still work on chrome.
If you cant boot you wont be able reinstall windows from windows
download and run https://www.microsoft.com/en-us/software-download/windows10 put it on a flashdrive and change your boot order to usb on your new pc