Resolve Windows 10 related issues for your HP computers or printers by HP Windows 10 Support Center
recovery | your computer need to be repaired | file:\BCD missing | Error code 0xc000034
See if this works...
Step 1, Using the link below, make a bootable W10 USB installer with the Media creation tool.
Download Windows 10 (microsoft.com)
Step 2, boot laptop/PC using the bootable W10 USB flash drive.
Step 3, Follow instructions until you get to the Install Now screen.
On the bottom left side of that window select the Repair this PC option.
Go through the options and select the command prompt.
Step 4, When you are at the command prompt, run these commands:
Bootrec /fixMBRbootrec /fixBootbootrec /rebuildBCD
Once done type exit.
Step 5, reboot as normal ...and hopefully you'll be back in windows 10 with no loss of data.
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