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

Fix Windows 11 Bluetooth Not Connecting: Practical Steps

You try to connect a Bluetooth device—headphones, mouse, keyboard—but Windows 11 either doesn'...

Fix Windows 11 Blue Screen After Update Stuck in Restart Loop

After a Windows 11 update, your PC may show a blue screen error and then restart repeatedly, neve...

Fix Chrome Black Screen in Remote Desktop with Hardware Acceleration Off

You're remoted into another machine, open Chrome, and the screen goes black—or the browser wi...

Cloudflare 521 Error: How to Check Server Logs

If you're seeing a Cloudflare 521 error, it means Cloudflare tried to connect to your origin ...

Fix Windows Update Error 0x80070005 by Taking Ownership

What Causes Error 0x80070005?

This error usually means Windows Update doesn't have pe...

Fix Nginx Upstream Connection Refused in Proxy Pass