Mostly This error occurs at startup and completely prevents you from accessing windows.
The full Message will be like :
Your PC Needs to be Repaired.
The Boot Configuration Data File is Missing Some Required Information.
File:\BCDError Code:0xc0000034
Basically, This error appears when boot loader files are missing or corrupt.
And Rebuild the BCD (Boot configuration data) probably fix the problem.
If you are also struggling with Similar problem, here apply the solutions below.
If there is no more startup error then any external gear causes the issue.
To identify the problematic gear attach one by one and restart windows every time.
Check after attaching which gadget the problem cause.
As this startup error completely prevents you from accessing windows.
We need to jump into the Advanced option to fix this startup problem.
To do this punch Startup Repair, this will restart windows and start the diagnostic process.
Perform Bellow steps to Repair Boot Configuration file manually.
Now key in the commandchkdsk /f /rto scan and repair Disk drive Errors.
This is one of the most working ways to get rid of this error.
However, As you cant access windows, you will need to reset windows from bootable media.
