Macbook restarts automatically in Windows

[Jcwalker200]

Hello,

I updated to Mojave on my MacBook Pro 13" 2016 and bootcamp got all messed up. now, when I do a normal restart, it automatically reboots into windows. the only way I can boot into OSX is if I do the power button with the option button. This is very annoying and can't seem to get rid of this issue. additionally, today, I decided to remove the windows partition with the help of the boot camp assistant, and install a clean version of OSX. anyways, I was able to format and install osx, but when I went to restart, it went back to windows!!! Obviously, it can't reboot into windows since there's no more partition, so I get a blue screen saying there was an error and I need to run setup utilities (or something like it) for windows. has anyone run into a similar issue? I ended up re-installing windows 10 pro, and now, I get the windows startup window, but once windows boots, my screen is completely blank and black. My caps look lights up if I push it, so something booted, but my screen is pitch black. any ideas? I need windows for work...
thank you in advance.

 

[DeltaMac]

Reset NVRAM.
(Restart, holding Option-Command-P-R. No boot chime on 2016 MBPro (?), so just hold the same 4 keys. 30 seconds should be OK, then release the keys, but continue to hold Option.
Choose your boot drive on the boot-picker screen, then press enter.
When you get to the desktop - open System Preferences, then the Startup Disk pane.
Unlock that pane, then select your macOS boot drive.
That should take care of your macOS boot problems.

But, if you really do need your Windows to work - it appears that a re-install of Windows did not help you.
So, I would start from scratch on that. Download the current Windows 10 ISO, to make sure that what you have to install is good. If you need a backup of your Windows partition, you should do that now.
Then - - -
Run Boot Camp Assistant (BCA) to remove your present Windows partition. Quit Boot Camp Assistant, then re-open it.
Make a new USB bootable Windows 10 installer, including a download of the Windows support software. You can do all that through the BCA. Make your Windows partition again, then follow that with reinstalling Windows 10, with your freshly-made USB installer. Migrate the things you need for Windows from your backup.
You should be up and running again.

 

[Jcwalker200]

I reset the NVRAM and followed the instructions for the startup disk pane. That solved my restart issue. I shut it off several times and it works good, starting on OSX every time.
I downloaded a fresh ISO from Microsoft for windows 10, ran BCA, and it didn't work. It goes through the downloading support drivers, creates the partition, installation, the windows setup screen, it goes through boot sequence, and when Windows starts up, the screen goes BLANK. Once again, the caps lock light comes on if I press it, but screen blank. I tried pressing fn and brightness in case the screen was turned down, but nothing.
BTW, this started Friday, after I took my MBP to the apple store to get my keyboard fixed. They changed the whole keyboard housing (at least that's what they told me).
thanks!