When the user changes the boot option from an internal hard disk to an external one, the error shows up since the external device is not bootable. In this case, the system tries to boot from a non-bootable device. The boot error can arise when the external drives are not properly configured. Other reasons include hard drive sectors getting corrupted, damaged, loose hard drive connections and/or cables, and old BIOS.Ī user may also encounter a BOOTMGR error in a state where the PC is trying to boot from an external storage device, namely a USB or a flash drive.

In some newer versions of Windows, system upgrade problems can also lead to BOOTMGR errors. The corrupted or default hard drive may also cause this. While there are a couple of reasons for this error, the most common include corrupted or misconfigured data. BOOTMGR is missing Press any key to restart.BOOTMGR is missing Press Ctrl+Alt+Del to restart.Here is the step by step tutorial for accessing bootrec. #6 Use bootrec.exe to rebuild the BCDīootrec.exe is a tool built in the Windows Recovery Environment (Windows RE) that you can use to troubleshoot and repair the error. On updating the BIOS, your PC should start functioning normally. This issue might be displayed due to an outdated motherboard BIOS which is currently present on your PC. If none of the above methods work, try updating your motherboard BIOS. Thus, try restarting your PC when you see BOOTMGR error on it. There is no valid explanation as to why but, restarting a PC is advised before trying any advanced method. It is observed that most of the issues get automatically fixed when a PC is restarted. You can use the ‘ Advanced Startup Options‘ to perform the Startup Repair for Windows on your PC.Īlso Read: How to Add Programs to Startup in Windows? #4 Restart your Windows PC: Using this method, the missing or corrupted files causing the BOOTMGR error will be fixed automatically. #3 Perform a Startup Repair for Windows: How to Add Programs to Startup in Windows? If all the sectors turn out to be intact, go ahead to the next solution.

If there is an issue with the sectors, you can use the chkdsk tool to shield it. The red and green markings will display the affected hard disc areas. Thus, you need to test your hard drive which can be done using MiniTool Partition Wizard. If there is some issue with the sectors on your hard disc, you will be facing this issue.

Repair bootmgr windows 7