My Macbook has a white screen with a circle with a line through it

Pardiix wrote:

I have a Mac book pro! And it will not show my home screen.. it’s just white with a circle with a line through it. I’ve tried everything! Is there something I can do?

If your Mac doesn't turn on

https://support.apple.com/en-us/HT204267

If your Mac doesn't start up all the way

https://support.apple.com/en-us/HT204156


If your Mac starts up to an Apple logo or progress bar

https://support.apple.com/en-us/HT207019

circle with a line is called the "Prohibitory" symbol.

Your Mac appeared to have all the right stuff to start up. But part way through the process, an important fundamental file required was found to be defective or the wrong version for your specific model Mac.

Try to repair the disk.

If no joy, a MacOS re-install in place is likely needed. By design, this does not alter any user files. But it will re-write over 350,000 files, so if your disk is marginal, this may force it over the edge into failure.

If you do not have a recent backup, it would be more prudent to buy an external drive, and do a new Install on the external drive, preserving your old internal drive for later attempts to salvage.