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

How to Fix Git Detached HEAD State and Undo Changes

You run git status and see something like "HEAD detached at abc123". This ha...

How to Fix Git Merge Conflict Permission Denied Errors

Docker Container Exits Immediately After Start: Network Fixes

You start a Docker container and it exits right away. The container logs show no errors, or the e...

Bluetooth Icon Missing in Windows 11: How to Restore It

You open the system tray on Windows 11 and the Bluetooth icon is gone. Even if Bluetooth is turne...

Checklist for Fixing Windows Search Indexing

If your Windows search is returning no results, taking forever, or missing files, the indexing se...

Fix Git Push Rejected: Non-Fast-Forward Error

You try to push a commit to a remote repository and get: ! [rejected] main -> main (non-...