The Boot Configuration Data file is missing some required information, 0xc0000034
This error is received when the Boot Configuration or BCD file is missing some required information or has become corrupted. The accompanying error codes mentioned could be 0xc0000034. The error message will usually include the suggestion that you will need to use the recovery tools on your installation media like DVD or USB to repair and recover your Windows installation. To fix such errors, disconnect all external devices and then insert your installation media or connect your USB to your laptop, restart your computer, boot from the media, and select Repair your computer. You can download and also use Windows Media Creation Tool to burn a bootable DVD or USB. Next, select the Advanced options.
Under Advanced Startup Options you will see:
System RestoreSystem Image RecoveryStartup RepairCommand Prompt:Startup SettingsGo back to the previous build.
Select Command Prompt and use it to rebuild your MBR, using the built-in bootrec tool. You need to run the following commands one after the other in the CMD window: Restart your computer and see if any of these suggestions have helped you resolve the issue. Related reads:
Boot Configuration Data is missing, Error code 0xc0000185The Boot Configuration Data for your PC is missing or contains errors, Error code 0xc00000f0xc000014C error attempting to read the Boot Configuration Data0xc0000454, The boot configuration data for your PC is missing or contains errors.
You may also use EasyBCD or Dual-Boot Repair to repair your BCD file. It also lets you repair MBR. More ideas here: The operating system couldn’t be loaded because a critical system driver is missing or contains errors.