When windows will only boot to safe mode that means there is some issue that needs attention. Your post is light on details so let's start with a search. If you supply more details we can work to narrow the millions of causes.

-> https://duckduckgo.com/?q=how+do+i+turn+windows+safe+mode+off+

Of course there is the old standby, fixes it every time if it's not hardware. Reload the OS to its factory condition.