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

Fix Windows 11 No Internet but Wi-Fi Connected DNS Issue

You see the Wi-Fi icon connected with full bars, but apps, browsers, and system updates all repor...

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Fix Windows 11 Blue Screen After Update Using Compatibility Mode

You installed a Windows 11 update, rebooted, and hit a blue screen. This often happens when a dri...

Fix Chrome Status Access Violation Registry Error

You open Chrome and see an error like STATUS_ACCESS_VIOLATION or a crash with that c...

Fix Cloudflare Wildcard Subdomain Redirect Loop