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

Fix Discord Black Screen from Chrome Hardware Acceleration

Why Chrome Hardware Acceleration Causes Discord Black Screen

When Chrome uses hardware a...

Fix Cloudflare Error 521 After a Server Update

If you see Cloudflare error 521 after updating your server, the origin web server is refusing the...

Windows Update Service Not Running in Windows 11: Fix It

If Windows Update won't start and you see an error like "Windows Update service is not ru...

Fix Windows Defender Real-Time Protection Not Turning On After Update

After a Windows Update, you might find that Windows Defender's real-time protection is stuck ...

How to Enable Windows Defender Real-Time Protection via Command Line

If you need to turn on Windows Defender real-time protection but can't access the Settings ap...

Git Detached HEAD: Practical Checklist and Fixes

You see a message like 'You are in 'detached HEAD' state' when checking out a com...