Ntoskrnl.exe BSOD error: pro fixes of 2025.

Here's how to fix Ntoskrnl.exe BSOD error.

i. High CPU Usage from ntoskrnl.exe occurs when the Windows kernel system process consumes excessive system resources. This can be due to various reasons, including system file corruption, driver issues, or malware.

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*Causes of High CPU Usage by ntoskrnl.exe:*
1. *Outdated or Faulty Drivers:* Driver conflicts can cause ntoskrnl.exe to overuse the CPU.
2. *Memory Leaks:* Improper memory management can lead to CPU spikes.
3. *Malware or Virus Infection:* Malicious programs may disguise themselves as system processes.
4. *Corrupted System Files:* Damaged Windows files can cause instability.
5. *Windows Updates or Background Tasks:* System maintenance tasks may run unexpectedly.

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*How to Fix ntoskrnl.exe High CPU Usage:*

#### *1. Update Drivers:*
Press *Win + X* and select *Device Manager.*
Expand device categories and right-click each device.
Select *Update Driver* and choose *Search automatically.*

#### *2. Run System File Checker (SFC) and DISM:*
Open *Command Prompt (Admin).*
Type the following commands and press *Enter* after each:
```bash
sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth
```

#### *3. Check for Malware:*
Run *Windows Defender* or a trusted antivirus program.
Perform a *Full Scan.*

#### *4. Disable Unnecessary Startup Programs:*
Press *Ctrl + Shift + Esc* to open *Task Manager.*
Go to the *Startup* tab.
Disable any unwanted startup programs.

#### *5. Adjust Virtual Memory Settings:*
Press *Win + R**, type **sysdm.cpl**, and press **Enter.*
Go to the *Advanced* tab, and click *Settings* under *Performance.*
Under *Virtual Memory**, click **Change.*
Uncheck *Automatically manage paging file size.*
Select *Custom size* and enter recommended values (usually 1.5x - 3x your RAM).

#### *6. Check for Windows Updates:*
Go to *Settings - Update & Security - Windows Update.*
Click *Check for Updates.*

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*Last Resort:*
If the issue persists, consider performing a *System Restore* or **Clean Install of Windows**. These steps should help bring the CPU usage back to normal.

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