system diagnostics

Windows error codes often feel like random hexadecimal noise, but that frustration comes from the way Windows has layered several error systems over decades rather than from the codes themselves. Microsoft’s Error Lookup Tool, better known as ERR.exe, is the old but still useful utility that...

Knowing how much video RAM (VRAM) your Windows 11 PC has is a tiny piece of information that can save you hours of troubleshooting — and a bad purchase — when a game, video editor, or 3D app complains about memory or texture streaming. This deep-dive pulls together four reliable methods built...

If your Windows PC feels sluggish and Task Manager isn't giving you a clear culprit, there’s a built‑in tool that often finds the real reason in one minute: run perfmon /report and let Windows generate a System Diagnostics (Performance) Report. The utility quietly records 60 seconds of activity...

I’ve noticed my Windows system takes much longer to start after automatic updates. I’ve checked startup apps, disabled some, but it still feels sluggish. What steps do you take first when boot performance drops unexpectedly?