Windows 10: Bootorder not found

Hello, I have Hp pavilion 15 with windows 10 installed on it. so, recently i installed Ubuntu on it, Unfortunately i didn't partition the hard disk in windows, but i did partition it in Ubuntu. so after installing Ubuntu successfully, I switched off the pc and turned it on again, but instead of it showing me two operating systems to choose from its showing me "System Bootorder not found. Initializing defaults." Then it starts Ubuntu after a while.

So my question is how can i remove Ubuntu and get my windows back without loosing my files, because i mistakenly forgot to backup my files in windows.

:)

 

System settings app,Display settings app, Microsoft store app close/crash on startup (desk.cpl)

Found the solution myself.

Did 3 steps so either of these fixed it.

1. Reseated RAM
2. Noticed the IGPU memory settings were accessible while having PEG enabled ('Enabled IGPU, boot up, shutdown, Disabled IGPU, now all iGPU mentions were gone from BIOS) -->Monitors now show the BIOS splashscreen again aswell
3. Bootorder was on UEFI and legacy--> Put it on UEFI only.

After 1 (of more of these steps) all issues were gone, including the weird Vista boot animation.

Considering that System settings were accessible in safe mode my bet would be that the 'glitched' setting for the GPU's caused Settings to be misbehaving.

 

Cannot Boot my Win 10-- System BootOrder not found

I migrated my Win 10 from Hard Disk to a Samsung 860 EVO SATA M.2 -250 GB SSD. I watched this YouTube video() for guide and did exactly what the video said. When booting my PC next time, it flashed an error
message:

System BootOrder not found. Initializing defaults. Reset System.



Then it restarts again and the same error message and goes on continuously.

What I had done.

According to the video, I used Samsung's Data Migration Software to transfer my OS. The software transferred my OS successfully and it demanded to Shut down my PC.

I restarted my PC and as in the video I went to Disk Management, the Hard drive was offline. I switched it to online and formatted the Hard drive. Everything seemed ok till now. I did some web browsing and switched off my PC. But the next time I boot it
I got that error.

I should probably use another OS to boot it, then fix the error. I haven't done anything till now.

Please help me guys.

 

uefi boot not showing ubuntu / GRUB

I've an acer aspire e 14.

It has a single HDD with 7 partitions:

• EFI system on /dev/sda1
  
• Something described as "Microsoft Reserved" on /dev/sda2
  
• Windows 10 FS on /dev/sda3
  
• Linux FS on /dev/sda5
  
• Swap on /dev/sda6
  
• Microsoft Windows Recovery Manager on /dev/sda4
  
• Free Space on /dev/sda
  

Now the thing is, I'm sure both windows 10 and linux (lubuntu) are installed on UEFI mode, however there's no entry in the boot order to let me select ubuntu or grub as the prefered boot option.

If I don't do anything at boot it will automatically boot to windows 10 without asking anything.

If I want to boot to ubuntu I have to do the following trick:

1. Insert a bootable USB stick (with grub)
   
2. Once the computer boots, the grub of usb stick lets me choose between trying the live version of the OS in the USB or installing it, I just press Escape.
   
3. This brings up a console into which I just type 'exit'.
   
4. The following screen seems to be the UEFI boot selection, and it lets me choose between booting the USB, an 'unknown device', or windows 10 boot manager. If I choose the USB it just goes back to the screen on step 2. If I choose the last it boots windows 10, and if I choose the 'unknown device' it finally shows the screen of grub that's installed in the computer which lets me choose to boot lubuntu or windows.
   

I really have no idea as to how to solve this issue, so any suggestion or advice is welcome.

(Edit) Among the things I tried are the following:

• "efibootmgr -v" shows up two entries for the same file (an \EFI\ubuntu\shimx64.efi) one named ubuntu, and the other "unkwnown device" this last one also finish the description with an RC. I tried to change the --bootorder to match both of them before the windows boot manager, to no efect, at restarting I boot to windows, and when going back to linux the boot order is not the one I placed before.
  
• I tried redbuilding the grub as suggested by SmallLoanOf1M, to the same result, but I noticed a weird thing, my linux has a /boot/efi folder. But when I mounted the EFI system (/dev/sda1) to rebuild grub, what I got was that there is an "EFI" folder (notice the caps), could that be the problem? and if so, how should I solve this without messing up anything?