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The 0xc0000221 blue screen error in Windows is a critical system error that typically appears when there is a problem with important system files, drivers, or hardware. This error prevents Windows from booting correctly and usually requires troubleshooting to fix. Here are the common causes of this error:

1. Corrupted System Files:

The most frequent cause of the 0xc0000221 error is corrupted or missing system files. These files are essential for Windows to boot properly, and corruption can happen due to sudden power loss, system crashes, malware, or improper shutdowns.

2. Faulty or Incompatible Drivers:

Outdated, incompatible, or corrupted drivers can lead to this error. When a driver essential to the system’s operation fails, it can cause the system to crash and display this blue screen. This is especially common after hardware or software updates if drivers are not updated accordingly.

3. Hard Drive or SSD Issues:

Faulty hard drives or SSDs, bad sectors, or file system corruption can lead to this error, as Windows cannot properly read from or write to the disk. Hardware failure in storage devices can also lead to the corruption of essential boot files, triggering this error.

4. RAM Issues:

Problems with your memory (RAM), such as faulty RAM modules or incorrect configurations, can lead to this error. Errors in memory management can prevent Windows from loading its necessary components, resulting in the blue screen.

How to Fix the 0xc0000221 Blue Screen Error:
Run Startup Repair:

Use the Windows Recovery Environment (WinRE) to run a Startup Repair. It can automatically detect and fix problems preventing Windows from booting.
Use System File Checker (SFC) and DISM**:

Boot into Safe Mode or the command prompt via WinRE, then run:
sfc /scannow to repair corrupted system files.

DISM /Online /Cleanup-Image /RestoreHealth to fix any issues with the Windows image.

Check and Update Drivers:

Ensure that all drivers are up to date, especially for critical hardware like graphics cards, network adapters, and storage devices. Uninstall or rollback recently installed drivers that could be causing conflicts.
Run CHKDSK:

Use CHKDSK to scan and repair any disk-related issues:
Open Command Prompt from WinRE and type chkdsk /f /r to scan the hard drive for errors.

By addressing these causes, you can resolve the 0xc0000221 blue screen error and restore your system to normal functionality.

CHAPTERS
00:00 Intro
00:20 Solution 1
02:23 Outro