Fix missing boot loader windows 7

Create Windows 7 installation media on a working computer. Step 3. Start your computer and press the corresponding key to go to BIOS. Step 4. Set boot priority to your drive in the Boot option.

Step 5. Save changes and restart your computer. After that, it will start to load files, wait patiently. Step 6. After that, you will go to the Install Windows screen, click Repair your computer. Step 7. Sometimes, you will not see any operating system in this window, please click Load Drivers to install drivers for your disks. Step 8. Just wait patiently until the process is completed and click Finish. When you try to manually run Startup Repair using installation disc, you may find startup repair not working sometimes and ask you to restore your computer with System Restore.

Click Restore if you have a working restore point. If not, click Cancel. Then, you will see the Windows cannot repair your computer automatically screen with 2 options at the lower location, select " View advanced options for system recovery and support ".

After that, you will go back to the System Recovery Options window and select Command Prompt to boot repair Windows 7. Then, it will automatically pop up. Wait a minute, please try Windows 7 startup repair command prompt chkdsk to scan the integrity of your file system and hard drive so as to rule out the physical problem of hard drive. In order to repair your boot sector, you need a Windows Installation disc. You can fix the corrupted boot sector afterwards. Thus, you can rebuild MBR for your computer.

See more details below and choose a proper method based on your situation. The first thing you have to prepare is a Windows Installation disc.

Then boot from that disc and enter system recovery options or repair your computer, and choose command prompt. Next you can enter these commands in turn. The specific steps are listed below:. Step 1.

Install and launch the software on another working computer. The approach of ESP also ensures that the system failures often experienced by the operator get sorted out. In an Operating system, the boot loader works as a component that authenticates a complete booting for operators while they turn their PC ON.

Besides, if you delete an ESP system partition, then the device may not work correctly, and the installed system may become unbootable. Any computer that has an operating system installed in it will have a boot manager. Many times, you can find the location of this EFI file in a special system partition.

Well, this partition doesn't contain a drive letter. Even more, it is sometimes hidden. So, you are facing issues while booting your device with the help of an EFI boot loader. Well, it is not an arduous task as you could imagine. Before we begin, make sure that your computer's Motherboard is working fine.

Moreover, you should also ensure that it supports UEFI mode. If your computer meets these two primary conditions, then here a quick fix. First of all, go to the search section and type disk management.

After that, right-click on the disk that you want to test. So, if your Motherboard is fine and supports this UEFI boot, and also if there are issues with the Boot loader, then you can try the following simple ways to repair it.

Note that we will be using two different methods here. Access the Command Prompt using the Windows installation disk refer to the solution 1 and enter the following commands:. Boot your Windows 10, 8, or 7 computer that has the error from the bootable media device. Press Apply to confirm the operation. The boot manager failed to find OS loader error should now be fixed.

Root cause found: Boot manager failed to find OS Loader. Repair action: File repair Result: Failed. Bootloader was deleted.