Unable to connect my MacBook to Internet
How do I connect internet is my Mac won’t load? Need connect to reinstall
[Re-Titled by Moderator]
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If your Mac is unable to boot up, then you will not be able to gain access to the Internet in order to re-install macOS directly from the Mac.
Have you tried booting up in Safe Mode? Ref: How to use safe mode on your Mac - Apple Support
What have you tried, so far yourself, to resolve this so that we don't offer any potential solutions that may not have already worked for you?