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

Fix Chrome Crashes When Opening PDF Files

You click a PDF link in Chrome and the browser freezes or closes entirely. This is a known issue ...

Fix OneDrive Sync 502 Bad Gateway Error

You open OneDrive and see a 502 Bad Gateway error when syncing files. This usually means a tempor...

Fix Windows Update Black Screen After Restart

After installing a Windows update and restarting, a black screen (with or without a cursor) can b...

How to Fix Chrome DNS_PROBE_FINISHED_NXDOMAIN Error

When you see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, it means the browser can't f...

How to Fix Task Scheduler High CPU Usage from Background Tasks

You open Task Manager and see Task Scheduler consuming 20–50% CPU, even when your PC is idle. Bac...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN