Safe mode is a powerful tool for troubleshooting driver issues or software issues. Here is how to start any Mac in safe mode.

If the same issue occurs (and you see it can only boot in safe mode), you know it's hardware. There's a possibility, for example, that safe mode is disabling certain graphical drivers that are ...

So, if you're using a Windows keyboard, restart your Mac and hold down the Windows key+R combination to boot into Recovery Mode. Alternatively, use a Terminal command.