The boot error “BOOTMGR is Missing” in Windows The POST is a set of routines that are run immediately when starting the PC, such as checking if your RAM, peripheral devices and other hardware components your PC has are working correctly.Īfter these routines are completed by BIOS, the Windows boot loader begins, where this error is going to appear. The error appears right after the POST process is completed and Windows starts to load. When you turn on the computer, the POST (stands for Power On Self Test) processes begin to run by BIOS before booting your Windows copy. Press Ctrl Alt Del to restart”, but your PC may also display “Couldn’t find BOOTMGR”.īoth refer to the same error that is causing your PC to fail to start. The most likely shown error message would be “BOOTMGR is missing. 3.5 Fix #5: Use bootrec.exe to fix the bootĮxplained below are the most common solutions you can do to repair this error, but we also recorded a video about this stubborn error and what to do about it without a Windows setup DVD (or if this Windows install CD fails) using our recovery disc Easy Recovery Essentials by NeoSmart Technologies.3.3 Fix #3: Use bootrec.exe to rebuild the BCD.3 Other fixes for BOOTMGR is corrupt or missing.2 Guaranteed Fix: Use Easy Recovery Essentials.

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