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

Fix ERR_CERT_AUTHORITY_INVALID in Chrome

When Chrome shows ERR_CERT_AUTHORITY_INVALID, it means the browser cannot verify...

Fix Windows Defender Blank Screen via Registry Edit

If you open Windows Defender Security Center and see only a blank white or gray screen, the inter...

How to Fix Microsoft Teams Microphone Not Working on Windows 10

If your microphone isn't working in Microsoft Teams on Windows 10, you're not alone. This issue o...

BitLocker High Memory Usage: Causes and Fixes

You notice that your system is running slowly and Task Manager shows BitLocker processes consumin...

Fix Windows Defender 502 Bad Gateway: Tool Usage Tips

When Windows Defender returns a 502 Bad Gateway error, it usually means the security intelligence...

Fix nvm not working in CMD or PowerShell on Windows