Dead pixel vs. stuck pixel: what the screen pattern actually shows
A cautious way to separate persistent black points, color-locked subpixels, dust, reflections, scaling artifacts, and intermittent defects.
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All guides
Evergreen hardware guides. Written to make browser results easier to interpret without overstating what software can prove.
New laptop first-day checklist
What to verify while return and exchange options are still simple: identity, exterior, display, input, media, battery evidence, ports, updates, and recovery.
Read guideHow to inspect a used laptop without over-trusting software
A layered inspection that cross-checks seller claims, visible condition, local reports, browser behavior, operating-system diagnostics, and a short real workload.
Read guideWindows battery report explained
Design capacity, full-charge capacity, cycle count, usage history, and why one “health percentage” is not the whole diagnosis.
Read guideBacklight bleed vs. IPS glow
Why dark-screen photos are misleading and how position, angle, brightness, exposure, and panel technology change what you see.
Read guideKeyboard rollover, ghosting, chatter, and missed events
What a browser key visualizer can reveal, what the operating system may intercept, and when to confirm with another application.
Read guideCamera and microphone privacy check
How permissions, local previews, device indicators, track shutdown, browser settings, and operating-system controls fit together.
Read guideThe limits of browser hardware tests
A browser can verify useful behavior without becoming firmware diagnostics, a lab instrument, a repair tool, or proof of internal component identity.
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