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

How to Fix Chrome Memory Hogging on Windows and Mac

You open Chrome, and your system slows to a crawl. The fan spins up, apps lag, and Task Manager s...

Docker Container Exits Immediately: Diagnosing Out of Memory

You start a Docker container and it exits within seconds. The logs show nothing obvious, or they ...

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...

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...

How to Fix an Nginx Redirect Loop: Step-by-Step

You load a site and the browser keeps spinning—eventually showing 'redirect loop' or '...

Fix Nginx 502 Bad Gateway on Docker Ubuntu