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

Fix Command Prompt High CPU Usage on Windows 7

If you notice your Windows 7 system slowing down and Task Manager shows cmd.exe using high CPU, i...

How to Set Up Certbot with Nginx on Ubuntu 22.04

If you're running Nginx on Ubuntu 22.04 and need a free SSL certificate, Certbot with the Nginx p...

How to Fix Windows Terminal Profiles JSON Error

Windows Terminal relies on a profiles.json file to store your settings. When this fi...

Fix KMS Activation Error: Port 1688 Already in Use

Fix Windows Defender Update Error 0x80070643

If you see error 0x80070643 when updating Windows Defender, it usually means the update failed du...

BitLocker Asks for Recovery Key After Reboot: Fixes

You restart your Windows PC, and instead of the usual login screen, BitLocker asks for a recovery...