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

Fix OBS Black Screen but Audio Works: Step-by-Step Guide

If OBS Studio shows a black screen in your source preview or stream but audio is working fine, yo...

BitLocker Proxy Error Sync Issue: Causes and Fixes

When BitLocker fails to sync with a proxy server, you may see errors like "0x8007007a" or "The pr...

Firefox Profile Missing Troubleshooting Checklist

When Firefox starts but shows none of your bookmarks, passwords, or extensions, the profile may b...

Fix KMS Activation Error: Port 1688 Already in Use

Systemd Service Not Starting After Reboot: Practical Fixes

You've set up a systemd service, it runs fine when you start it manually, but after a reboot it s...

How to Fix Command Prompt Invalid Configuration Error Code

You open Command Prompt and see an error like "Invalid configuration" followed by a code...