▷ How to correct the error “Boot device not found” on Acer systems, DELL o Toshiba

Many Windows users have been affected by a problem where their computers will not start and they encounter a black screen with an error message saying “No boot device found”, no matter how many times they try to start their computers. computers. This error message basically means that the affected computer has not been able to access the hard disk drive or solid state drive containing the boot information or that it has searched all solid state or hard drives for the connected boot information and did not find any.

This problem is known to mainly affect Windows 8 Y 8.1, but there is nothing stopping you from taking advantage of Windows users 10. Not starting your computer in Windows is in itself quite a big problem, and it only gets worse when combined with looming thoughts that your Windows installation is failing or that your computer's hard drive is failing. Fortunately, this problem can be fixed without starting Windows, but you will need a Windows installation disc or a USB containing the installation files for the same version and architecture of Windows that is currently installed on your computer. This is what needs to be done:

1. Insert the Windows or USB installation disc into the affected computer and reboot

2. As soon as the computer starts to boot, enter your BIOS settings and set the computer's boot order to boot from the installation media instead of your HDD / SSD. Instructions for entering the computer's BIOS will vary from computer to computer., but they will almost always be on the first screen you see when the computer starts.

3. Save changes and exit BIOS

4. If asked to do so, press any key to boot from installation media.

5. Select your language preferences, time zone and keyboard layout and then click Next.

6. When you get to a window with an Install Now button in the center, Find and click Repair your computer in the lower left corner of the window.

You should now get to the Boot Options screen. Once i am here, should:

1. Click Troubleshooting> Advanced Options.

2. Click on Command Prompt and a command prompt will start.

3. One by one, type the following commands at the command prompt and press Enter after typing each one:

diskpart
list disk
sel disk X (replace X with the number corresponding to the disk on which Windows is installed)
partition list
create efi partition

Note: If you see an error message that there is not enough space for the new partition after running the last command, type the following commands at the command prompt and press Enter after typing each one:

sel partition X (replace X with the number corresponding to the largest partition on the disk)
desired shrinkage = 200 minimum = 200
create efi partition

1. Type the following commands at the command prompt and press Enter after typing each one:

partition list
sel partition X (replace X with the number corresponding to the new partition you have created)
format fs = fat32
partition list
sel partition X (again, replace X with the number corresponding to the newly created partition)
assign letter = b:
exit

1. Type the following commands at the command prompt and press Enter after typing each one:

you b:
mkdir b:N-efi
mkdir b:N-EFIN-Microsoft
cd / d b:N-EFIN-Microsoft
bootrec / fixboot
bcdboot C:NWindows / l en-us / s b: /f TODOS
to you
You boat
exit

1. Exit the Windows recovery environment and remove the installation media from the computer.

2. Restart your computer and check if it starts properly without the error message “No boot device found”.

If the problem is not solved, the root of the problem may be more serious, such as a crash or HDD failure / SSD. If that's the case, you should have a professional check your computer or, if it's still under warranty, send it to the manufacturer for examination.