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system diagnostics
About this tag
System diagnostics on Windows covers a range of built-in and third-party tools for monitoring performance, decoding error codes, and troubleshooting issues. Topics include using Performance Monitor (perfmon /report) for a quick 60-second system check, the Error Lookup Tool (ERR.exe) for translating Win32, NTSTATUS, and HRESULT codes, and methods to check VRAM on Windows 11. AppControl is discussed as a visibility tool for tracking process behavior and hardware usage beyond Task Manager. Common troubleshooting scenarios like slow boot times after updates are also addressed, with practical steps for identifying and resolving performance problems.
PCMag UK’s hands-on look at AppControl, a free Windows 10 and Windows 11 utility from developer Jon Hundley, argues that the app gives power users a 72-hour view into process behavior, hardware usage, privacy-sensitive access, and system changes that Windows Task Manager still largely treats as...
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?