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

Recover Lost Changes After Git Detached HEAD

You've made several edits, then checked out an old commit or tag, and now Git says you're...

Fix Git Push Rejected Non Fast Forward Error

Python Command Not Found in Windows Terminal: Fixes

When you type python or python3 in Windows Command Prompt or PowerShell...

Cloudflare SSL Full Strict: Fix Origin Certificate Errors

If you've set Cloudflare's SSL/TLS encryption mode to Full (Strict) and started seeing er...

Fix Nginx Permission Denied for SSL Certificate Files

When nginx refuses to start or reload with a "permission denied" error related to an SSL ...

Fix Chrome Black Screen During Videos: Hardware Acceleration

If you're watching a video in Chrome and the screen goes black (but audio continues), hardwar...