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

How to Fix Black Screen After Enabling Hardware Acceleration in Chrome

You enable hardware acceleration in Chrome to improve performance, and suddenly the screen goes b...

Fix Nginx Upstream Connection Refused Behind Cloudflare

If you see upstream connection refused in your Nginx error logs while using Cloudfla...

How to Access a Shared Folder on Network in Windows 10

If you're trying to open a shared folder from another computer on your network but get an err...

Fix Windows Security App Missing from Start Menu

You open the Start menu, type “Windows Security,” but nothing appears. The app may have been unre...

How to Fix Windows Explorer Error 0xc0000005 on Restart

If Windows Explorer keeps restarting and you see error 0xc0000005, it usually means a critical pr...

Fix Nginx Upstream Connection Refused Socket Error