So, how to fix the issue?
This post on theMiniTool Websitewill show you a guide.
Under the circumstances, you may need touse installation mediato recover your PC system.

The next troubleshooting methods can be helpful to fix the ntoskrnl.exe error code 0xc000a004.
Then we will troubleshoot the error code viaWinRE.
After entering WinRE, you’ve got the option to clickTroubleshoot > Advanced options > Startup Repair.
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Now, Windows will start diagnosing your box.
If not, continue with the next moves.
Is Windows Automatic Repair not working?

it’s possible for you to perform theSFC scanto fix the system corruptions.
Still, in WinRE, clickCommand Prompton theAdvanced optionspage.
you’re free to run a disk check after the SFC scan.
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c’mon enter thechkdsk c: /f /rto execute the check.
But notice that, thec:in Check Disk command means the drive that you place your boot files.
c’mon change it to the right drive where you place your Windows installation files.

Faulty BCD can cause the error code 0xc000a004.
Step 1: ClickSystem Restorein theAdvanced optionspage and choose the wanted restore point.
Step 2: ClickNextto follow the on-screen prompts to finish the process.

This article lists seven common recovery options in Windows 10 for solving computer problems.
The usages of the seven options are illustrated in detail.
Step 1: Go back to theTroubleshootpage in WinRE and clickReset this PC.
It is important to keep your data protected before any accident happens.
Download and install this program on your box and connect the drive before launching the tool.
MiniTool ShadowMaker TrialClick to Download100%Clean & Safe
Step 1: pop pop the program and clickKeep Trial.
For more prefs, it’s possible for you to change them via theOptionsfeature.
Step 3: Then clickBack Up Nowto initiate the task.
you oughta have a USB drive that stores asystem backupfirst.
MiniTool can be your excellent assistant for data security and provide available solutions to prevent data loss.
If you have any issues with MiniTool, you could contact us via[email protected].