Windows 10: Black Screen, Continuous Reboot, Unsuccessful BCD Rebuilds and Boot-fixes, Interrupted...

My adventures in trying to fix my computer started when I stupidly started messing around with my GPU settings. It's an AMD 560. It gave me a black screen so I check the forums on the AMD site and got my answer. https://community.amd.com/thread/219076 I uninstalled the graphics card, and followed all the directions. I then installed an earlier version of the drive with the same black screen issue. The problem was that the GPU had changed from HDMI to AVG Standard without setting pixel count. I was able to get my system to recognize the window graphics car by entering Safe Mode to uninstall the AMD graphics card. I couldn't use programs like Daz Studio because the graphics card was ****. So I went to safe mode to recover my computer back to before I installed the driver to troubleshoot some more. All was working fine until my system did a restart to finish the recovery, and there was that black screen. In frustration, and without thinking that I was in the middle of a recovery, I held the power button and shut off my computer. UGH! So stupid! I hooked up another monitor as was suggested I do so that I had two monitors going. The new monitor is DVI. This is where I descended into the rabbit hole of insanity that finally brings me here to ask for help.


I restarted and I got the blue screen saying my computer was having problems. It did the standard reboot cycle until I saw what the issue was. At this point I did not understand completely the USB bootable drive completely. If I had, I might not be here right now. But I read this and skipped it because I didn't understand exactly what it meant. https://answers.microsoft.com/en-us...computer/390ef2e2-369a-42ef-a624-71f312448296


Because I got this message:



I did what was in this link: https://answers.microsoft.com/en-us...trailtxt/e462bd3f-2b92-4ed1-8b1c-ed4866256f46


I got this message:







Seeing that things were "fixed," I restarted. It didn't boot windows so back in WinRe, I thought I'd try the restore point again. HA! No. The error there said that "you must enable system protection on this drive." By this time, I'd read how to make a bootable disk and not only got a USB but also a portable 1TB disk and made a bootable disk. I had two issues at this point. Rebuildbcd showed 0 windows installations as well as enable system protection on the drive. I found these links and followed the directions in this order WITHOUT doing a restart before trying to restore. https://answers.microsoft.com/en-us...ations-0/52359f87-de4a-41dc-b0c3-cc275e1d9fbf

https://www.minitool.com/backup-tips/you-must-enable-system-protection.html Admittedly, I didn't follow everything on this last site. I had at this point been working on this off and on for 3 days. I went on to fix other issues that arose and forgot about this site. Nowhere did it say that each time you restarted, the BIOS would revert back to the hard drive and not stay on the removable device. So I spent a lot of time trying to figure out why I couldn't get back to the bootable disk. I probably wasted an entire day just working on that! Which, for those who run into the same problem as I, is simply fixed by pressing whichever F key is indicated on the startup menu on the initial boot screen. For my Windows 10 version, it was F8. I had to hit it several times before another window popped up to show the hard drive and the bootable disk. I chose the bootable disk and it sent me straight to it to bring up the install window. You have to do this EVERY time you want to restart with the bootable disk. The BIOS boot order will stay the same, and you WILL have to change those back manually.


Moving on. Having gotten the restore point back, I set the computer on its way to do its thing. When I came back, it had stopped with this message:



I don't have another restore point. I got no good information on how to turn off Windows Defender from a computer where only CMD works. I found this :https://www.errorsdoc.com/windows/how-to-fix-windows-10-system-restore-update-error-code-0x80070002/ It at least told me what the problem was.


So at this point, I've done rebuildbcd, fixmfr, bootfix, sfc scan, and other cmd inputs that I don't know whether to wind my butt or scratch my watch. Reset PC with saving my files doesn't work now. Windows 10 isn't even showing up as an option for me anymore. It's all still there. I checked when I went to copy files from my hard drive in case I have to do a clean install. This video helped me do that. https://www.youtube.com/watch?v=LwK4Zkp0AQM


My machine is a CyberpowerPC with Windows 10 running, or not running, on it. I installed the latest updates before all this happened, and after I got the first error, I uninstalled the upgrades while in WinRE. All the changes I did before the restore fiasco were done in Safe Mode with network. It's been almost a week that I've been doing this. I need help before I accidentally blow up my computer from blindly tinkering around. There has to be a way to get the system back and running without a clean install.

:)

 

How to clean up BCD entries? Rebuild the BCD?

This is normal that under Recovery Environment, The letters are re-assigned. This is why you have to be careful and select the correct one.
@dictum
Advice: Never use Easy BCD with Windows installed using GPT disk. Use Easy UEFI instead provided you know what you are doing. Easy BCD only works with MBR disk type.
Base on the screen shot above. Your disk 0 is your new Windows and your disk 1 contains the old Windows. Disk 3 contains a 512MB Fat32 partition and I don't know what that is. I suggest you disconnect disk 3 for now before proceeding.

Let rebuild new BCD's for both disk 0, and disk 1. Please follow step by step on the 2 screen shots below. On step 3, write down the drive letter for PM981_New. In the screen shot, My Windows is still assigned to C but it might be different from yours. In step 10, if the drive letter is different than C, then use the letter in step 3.

Do exactly the same for disk 1, this time select disk 1 in step 4 and assign letter V in step 7, Use V and the drive letter for Old Windows in step 10. This will create a new BCD for PM981_Old and you will be able to boot separately from boot menu.

From boot menu, select which one to boot from.
Once booted into Windows. If you wish, you can set up dual boot for Windows old & New. Under This PC, look for the drive letter of the offline Windows and type:
bcdboot X:\Windows where X is the letter of the offline Windows

 

BCD File Rebuild and BIOS

Our IT department updated my pc to 1803 not realizing that I have an X299 motherboard and a Samsung NVME SSD boot drive. I came in the next day to get the BCD File error BSOD with error code 0xc000098 (a known bug but not fixed a year after discovery).
Our IT department looked up this issue and decided to rebuild my BCD file and was (we thought) successful implementing this solution. My pc then booted from the previous NVME SSD drive. I had migrated my OS from the 256GB SSD to a new 500gb SSD, both NVME.
No troubles for a year booting from the 500gb disk and now it boots from the old 256gb drive which I did not wipe on purpose. I boot into the UEFI ASUS bios on the pc and the boot order configuration only lists one option for position 1 to 4. Before each position
listed each bootable device. First of all why in the world would a Windows update and BCD file rebuild screw with the BIOS and second how do I get the proper C: drive boot with to way to change the boot order in the BIOS?

 

Windows 10 BCD Rebuild

So recently my laptop ran in to a Boot BCD error (0xc0000034) and I looked in to fixes for it and was about to reset windows before coming accross a tutorial on how to rebuild the BCD.

I'm currently on the command prompt after entering the bootrec /rebuildbcd and have this: