

Assuming you have multiple drives, you may be booting from the wrong hard drive. If the “Windows Boot Manager missing from BIOS” still occurs, you should consider checking the boot sequence in BIOS. Then restart your computer to see if the problem is resolved. If this is the problem, remove all removable device and make sure your BIOS doesn't load from either. Typically, a "BOOTMGR is missing in Windows 10" error occurs when your PC tries to boot from a non-bootable disk, external drive, or floppy disk. Remove All Removable MediaĬheck your optical drive, USB port, and floppy drive for media. Then, check if this error is resolved by this method. Press Ctrl + Alt + Del or any key as prompted by the error message. If you encounter BOOTMGR is missing in Windows 10 after cloning, you can try restarting your computer first. Now that you've seen what might be causing this issue, let's discuss practical solutions to fix this error. This is a very common problem and affects both SSDs and hard drives equally the same whenever one drive is copied to another. “Boot Manger is missing” in Windows 10 issue usually appears shortly after the computer is turned on, immediately after the Power On Self Test (POST for short) is complete. How to Fix BOOTMGR Is Missing After Cloning? The most common causes of BOOTMGR errors include file corruption, configuration errors, hard drive and operating system upgrade issues, hard drive sector corruption, booting from the wrong hard drive, and more. Usually, the BOOTMGR file is read-only and is locating in the boot directory of the partition which is set as "active".Īs in the case above, there are also many users who reported that they had issues with the Windows Boot Manager missing from BIOS after cloning. It enables you to boot Windows 10/8/7 or Windows Vista operating system. Thoughts? Anything to do?”īOOTMGR is short for Windows Boot Manager which refers to a small piece of software that is loaded from the volume boot code. BOOTMGR missing in Windows 10, which is impossible because I've cloned the HDD ENTIRELY to the SSD. I've tried Macrium Reflect which is currently giving me this issue every time I try booting form the SSD after the cloning process has been completed. So I backed up everything, emptied out the PC and now it has roughly 20GiB left on the machine, which makes the process of cloning the HDD much easier to do and transfer the OS to the SSD.

Now, it seems to me that the 1TiB 7200RPM hard drive that came with the PC is showing its death, the PC is slow, it gets stuck constantly, etc.

“My Parent's PC is an HP Touchsmart AIO from like 2010(?) with a 6000 series A8 APU in it.
