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You can learn more about Safe Boot mode on Mac here if interested.Often simply resetting NVRAM / PRAM is sufficient to remedy a white screen Mac issue: After NVRAM has been successfully reset, go ahead and let the Mac boot as usual.
Keeping in mind that all Verbose Mode does is detail what’s going on during system boot, similar to watching a linux machine start up, it’s not entirely sure why this works but there are multiple reports on Apple Discussion Forums that it does.
If you see the Code 43 error elsewhere in Windows, chances are it's a system error code, which you should not troubleshoot as a Device Manager issue.
If you don't want to fix the Code 43 problem yourself, see How Do I Get My Computer Fixed?
To be clear, what we’re describing here is a Mac that is stuck on an all white screen with no logos, no progress bar, nothing, it’s just a blank white display.
There are vairous potential causes for a white screen to appear on a Mac during startup, so we’re going to cover a wide range of troubleshooting tips that may resolve the issue.
This can sometimes be remedied by choosing the boot drive during system start (hold down OPTION key during startup and choose Macintosh HD from the list), but if that doesn’t work this is often indicator of the hard disk failing, and you should try to replace it as soon as possible. A failing hard drive is not terribly unusual in the computing world, and I have personally seen a variety of weird errors when a Mac Book Air SSD was failing, including booting to a white screen, getting stuck on a black screen, the question mark on boot, the folder icon on boot, intermixed with occasional successful boots, all of which was remedied by replacing the SSD in Mac Book Air, but the same idea could apply to a Mac Book, Mac Book Pro, i Mac, Mac Pro, or Mac Mini too.