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×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
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×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
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- Notebook Operating System and Recovery
- Bootmgr is missing

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04-28-2020 12:03 PM
I read your post about boot device not found.
If you don't have Win10 install media, you will need it to do the repair, so create the media using the instructions in the link: http://windows.microsoft.com/en-us/windows-10/media-creation-tool-install?ocid=ms_wol_win10
Note that when you go do download and build install media, the tool defaults to matching what is already installed on your PC (as in, Home for Home, 64-bit for 64-bit). While you CAN change these settings, do NOT. If you do, the resulting media will be different and will force you to enter a NEW product code!
Once you have the media, try doing a Startup Repair following the instructions in this link:
http://www.windowswally.com/how-to-fix-error-code-0xc0000185/
I know that says Win8, but the steps are the same for Win10.
I am a volunteer and I do not work for, nor represent, HP