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

Fix Windows Update Error 0x80070005 by Taking Ownership

What Causes Error 0x80070005?

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

Cloudflare 521 Error: Troubleshooting and Fixes

When you see a 521 Web Server Is Down error, it means Cloudflare cannot establis...

Fix Windows Update Service Not Running for System Restore

You might see “System Restore did not complete successfully” or “Windows Update service is not ru...

Fix DNS Probe Finished NXDOMAIN: Chrome Flags Reset Guide

When you see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, it usually means the browser...

Windows 11 Update Stuck at 0%? Run System File Checker First

If your Windows 11 update is stuck at 0% for more than 30 minutes, corrupted system files are a c...

Fix Bluetooth Not Showing in Device Manager on Windows 11

If you open Device Manager on Windows 11 and Bluetooth is completely absent—no adapter listed und...