In Windows 7/8/8.1, the EFI boot item is accidentally deleted, and the solution (USB flash disk + original image) cannot be started, 8.1efi

In Windows 7/8/8.1, the EFI boot item is accidentally deleted, and the solution (USB flash disk + original image) cannot be started, 8.1efi

Today, I deleted the startup Item for Windows 7, because it is a GPT partition and EFI-guided, and it is not as easy to solve as MBR.

It is also difficult to reinstall the system, and you just need to delete a startup item, so there is no need to pay that time.

After thinking about it, the Windows system seems to be able to be saved, so you can start preparing items:

The items used are as follows:

1. One USB flash drive of 8 GB or above (4 GB seems to work, if you remember correctly ......)

2. the boot disk has been prepared for the USB flash drive (old peach, Chinese cabbage, and so on, which must be UD partitioned, that is, the rest of the space after the production can be

Formatting without affecting the boot disk)

3. A Windows 7/8/8.1 image file (ISO) is available at your fingertips)

Start the rescue process:

1. The system cannot be entered. Enter your small u boot disk and enter PE.

2. The current boot disk is very scientific. The UD partition allows you to start it in a traditional way and enable UEFI .. )

3. After Entering PE, you still have a part of the remaining partition of your USB flash drive and back up the important items in it to your computer.

4. format the USB flash disk and partition it into a FAT32 File System (that's right, we need to create an EFI boot disk)

5. decompress the ISO image file to the USB flash drive (root directory) with the decompression software)

(The 4g usb flash drive mentioned earlier can also be used. You can try to use a virtual optical drive to load ISO, and then copy the folder except "sources" to the USB flash drive,

Create a "sources" folder in the USB flash drive, and put the "boot. wim" file in the previous "sources" folder into the "sources" folder of the USB flash drive,

For successful friends, please leave a message .)

6. If the current installation system is equal to the ISO image system (that is, Win7 is used, and the image is also Win7, it must be the same as 64-bit)

Go to C: \ Windows \ Boot \ EFI \ and take out the "bootmgfw. efi" file on the desktop and rename it "bootx64.efi"

7. After decompression, enter the efi \ Microsoft \ folder of the USB flash drive and copy the "boot" folder to the upper-level directory.

8. Put "bootx64.efi" on the PE desktop into the efi \ boot \ folder of the USB flash disk. The boot disk is created.

9. Restart the BIOS boot menu and select the USB flash disk boot item starting with "UEFI.

Certificate ---------------------------------------------------------------------------------------------------------------------------------------------------

10. The installation interface will appear in Windows 7. Next, do not install it. There is a "Repair" option in the lower left corner. Note:

That's him. Wait -. -The system prompts you to fix and restart the service.

PS: for children's shoes in Windows 8/8. 1, the operations are roughly the same. If they are different, leave a message if you have any questions ~

All hands .. Text, read it patiently ~

The win81 system file is accidentally deleted and cannot be started.

LZ, how are you doing? Actually, it's easy to upgrade win8.1 directly when win8 was upgraded. Why are you re-installing it? It's also troublesome to back up the database. It's complicated. Since the installation is complete, how about windows after the upgrade? the old folder can be completely deleted, but the landlord mentioned that after deletion, the computer will not be able to start up, most of the reason is that the upgraded win8.1 shares a boot partition with win8. What you need to do now is to use a USB flash disk. create a pe Quick Start item and enter pe for boot partition repair and restart. Also, try not to use a third-party Installation Tool (as you can see from windows old) I am keen on win8 for nearly two years. * Hope the landlord will adopt

System files are deleted by mistake, which makes it difficult to start and redo the system.

Is it NTLDR? System file. You can copy an NTLDR file to a USB flash drive on another computer of the same system, use the optical drive to guide windowsPE, and then copy the file to drive C.