No boot priority order on Bios - Spin 5 SP515-51GN-83YY

Hi, I have a Spin 5 SP515-51GN-83YY model. It says no boot device found. I know I am supposed to press F2 to go to bios but under boot priority order: it shows nothing there. Above that it says Secure Boot Enabled. How do I fix this? Alt, fn, f10 or alt and f10 still says no boot device found.

There is nothing wrong with the hard drive or anything physical. I know because advanced startup option called start up from a device or disc caused it after I removed recovery usb flash drive while it was in progress at 31% because I thought I had chosen the wrong option since it wasn't loading the usb hard drive.

[//Edited the content to add model name]

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AnhEZ28

@MobiusXavier the efi boot might be corrupted during the recovery so you will need another and another usb for the windows installation on that USB. After that, boot from that USB and go to repair your computer to fix the EFI boot partition.

Callistemon

On a different computer, use the Media Creation Tool by clicking the Download Tool Now button at https://www.microsoft.com/en-us/software-download/windows10

Choose the DVD Image File mode, and save the ISO. Use Rufus to apply the ISO to the pen drive and choose UEFI non-CSM mode. This will overwrite the pen drive.

Copy notepad.exe from the C:\Windows\System32 folder of the functioning computer onto the pen drive, after using Rufus, and before removing the pen drive.

Insert the pen drive into the defective computer. Press F2 while booting, move the pen drive up the list in the Boot tab, and Exit Saving Changes from the Exit tab.

Choose your language and click Next. Don't proceed with Install Now. Instead, insert an external HDD for backups, then press Shift + F10. Type this line exactly as shown below.

D:\Notepad.exe || E:\Notepad.exe || F:\Notepad.exe || G:\Notepad.exe || H:\Notepad.exe

This string will automatically try multiple volume letters until it finds the correct one where you copied Notepad to after using Rufus. Then, Notepad will appear.

Once Notepad appears, choose Open from the File menu. Use the File Picker to copy your important files from the internal HDD to the external HDD. There will be no progress bar, only an hourglass cursor will appear until completion.

After backing up, close File Picker and Notepad, but leave Command Prompt open. Proceed to use

diskpart
list disk
select disk # (replace # with number of external backup HDD)
offline disk
select disk # (replace # with number of internal Windows HDD)
list volume

Post a screen capture of the output. This is necessary to know which numbers and letters to use in the next commands.

billsey

When it says "No boot device found" it means there is a problem with the system drive. Either it's unable to read the EFI partition or it's unable to read the system partition. Boot Priority doesn't really do anything on modern systems. The top priority should be Windows Boot Manager. You will want to boot on a Windows install image as suggested above. Use the BIOS to enable the F12 Boot Menu and disable Secure Boot. Save and exit, then put the install flash drive in and turn on. While POST is running press F12 to get into the boot menu and choose the USB drive. That gets the installer started. One the 2nd screen you will choose the Repair option, which allows you to continue with the rest of the suggested steps. We are going to need to find out of the EFI data is corrupted, if Windows is corrupted, or if the drive itself is failing. Each possibility has different steps to recover.

MobiusXavier

billsey said:

When it says "No boot device found" it means there is a problem with the system drive. Either it's unable to read the EFI partition or it's unable to read the system partition. Boot Priority doesn't really do anything on modern systems. The top priority should be Windows Boot Manager. You will want to boot on a Windows install image as suggested above. Use the BIOS to enable the F12 Boot Menu and disable Secure Boot. Save and exit, then put the install flash drive in and turn on. While POST is running press F12 to get into the boot menu and choose the USB drive. That gets the installer started. One the 2nd screen you will choose the Repair option, which allows you to continue with the rest of the suggested steps. We are going to need to find out of the EFI data is corrupted, if Windows is corrupted, or if the drive itself is failing. Each possibility has different steps to recover.

that didn't work and neither did the specific instructions from the person who commented before you. I did however need to reinstall windows again using a usb flash drive which I found a youtube video for. In the beginning I did have to press F12. It didn't work for the Acer usb drive used for factory reset, but it did work for the usb flash drive I created that has windows 10 in it. Is there a reason why it wouldn't work for acer usb drive? I have 2 copies I paid for that are for the specific model of my laptop. I got 2 in case the other one didn't work and both of them didn't so I don't know why it would work for the windows usb flash drive I created.

MobiusXavier

Callistemon said:
On a different computer, use the Media Creation Tool by clicking the Download Tool Now button at https://www.microsoft.com/en-us/software-download/windows10

Choose the DVD Image File mode, and save the ISO. Use Rufus to apply the ISO to the pen drive and choose UEFI non-CSM mode. This will overwrite the pen drive.

Copy notepad.exe from the C:\Windows\System32 folder of the functioning computer onto the pen drive, after using Rufus, and before removing the pen drive.

Insert the pen drive into the defective computer. Press F2 while booting, move the pen drive up the list in the Boot tab, and Exit Saving Changes from the Exit tab.

Choose your language and click Next. Don't proceed with Install Now. Instead, insert an external HDD for backups, then press Shift + F10. Type this line exactly as shown below.
D:\Notepad.exe || E:\Notepad.exe || F:\Notepad.exe || G:\Notepad.exe || H:\Notepad.exe
This string will automatically try multiple volume letters until it finds the correct one where you copied Notepad to after using Rufus. Then, Notepad will appear.

Once Notepad appears, choose Open from the File menu. Use the File Picker to copy your important files from the internal HDD to the external HDD. There will be no progress bar, only an hourglass cursor will appear until completion.

After backing up, close File Picker and Notepad, but leave Command Prompt open. Proceed to use

diskpart
list disk
select disk # (replace # with number of external backup HDD)
offline disk
select disk # (replace # with number of internal Windows HDD)
list volume

Post a screen capture of the output. This is necessary to know which numbers and letters to use in the next commands.

I didn't have to do all of that. This is all I had to do,

https://www.youtube.com/watch?v=bIlW4im-tr4

Callistemon

Yes, if you didn't have a need to backup your files before doing further changes, that's fine. I tend to overestimate things and make everything excessively complicated out of paranoia. I need to work on improving that. Sorry for the runaround.

billsey

Some of the factory image files from Acer are configured for a legacy boot, for no reason that I can think of. With those you have to disable UEFI, boot from the flash drive and have it do the install, then reconfigure for UEFI boot in order to boot from the rewritten software load. My guess is some engineer at Acer doesn't want to pay for a new base OS for the boot environment, they may be using a flavor of Linux or a non-MS DOS.

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