Knowledge base for software setup, errors, and daily tool work.

How to Fix BitLocker Pre-Boot Authentication Not Working

You enter your PIN or password at boot, but BitLocker skips the prompt and boots directly to Wind...

Fix Jupyter Notebook Token Expired or Invalid Error

When you try to open Jupyter Notebook and see “token expired” or “invalid token,” it usually mean...

Fix 'Windows Security Module Not Found' Antivirus Error

If you see a message like "Windows Security module not found" inside your third-party antivirus p...

How to Create a Docker Compose Network: Step-by-Step Setup

When you run multiple containers with Docker Compose, they are automatically placed on a default ...

Windows Defender Service Not Starting in Windows 10: Fixes

If Windows Defender won't start in Windows 10, you might see error messages like "Service did not...

How to Fix Chrome Profile Slow Performance

Common Causes of a Slow Chrome Profile

If Chrome feels sluggish only when you’re signed i...