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

Windows Activation on Ubuntu: Troubleshooting Checklist

If you're running Windows in a virtual machine or dual-boot with Ubuntu and activation fails, the...

Fix Windows Security High CPU Usage After Update

After a Windows update, you might notice the Windows Security process (Antimalware Service Execut...

Windows Defender Blank Screen: Troubleshooting Steps

You open Windows Security and see a blank white or gray screen. The interface doesn't load, and n...

Fix PostgreSQL Connection Refused on Port 5432

When you see psql: error: connection to server at ... failed: Connection refused on ...

Fix 'git remote add origin repository not found' Error