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Reviews, guides, comparisons, news, and troubleshooting from Tech Carvalho.
AITroubleshooting"Display Driver Stopped Responding and Has Recovered": What It Means and How to Find the Cause
What Windows is actually telling you when the screen flickers and this message appears, what the message does not tell you, and how to narrow down the real cause.
TroubleshootingYour New SSD Doesn't Show Up in Windows: Work Through It in This Order
A new drive missing from File Explorer is usually uninitialised, not broken. The safe order to check — with the exact step that erases data, flagged before you take it.
AITroubleshootingWi-Fi Connected But No Internet: Find the Cause Before You Start Resetting Things
Four tests that tell you whether the fault is your device, your router, or your ISP — before you reach for a network reset that erases every saved Wi-Fi password.
GuideWi-Fi 4 to Wi-Fi 7: What Each Generation Actually Changed
What each Wi-Fi generation genuinely added, why the certification date and the IEEE date are years apart, and when a newer number on the box changes nothing you can feel.
GuideDLSS, FSR and XeSS: Why Game Requirements Now Assume You're Upscaling
Vendor-documented differences between NVIDIA DLSS, AMD FSR 4 and Intel XeSS — which GPUs support what, and why published game requirements now assume upscaling is switched on.
AIGuideHow Much Storage Modern Games Actually Need
Published install sizes for current PC games, why the SSD stopped being optional, and what console storage really leaves you. Every figure quoted from the publisher's own listing.
GuideMinimum and Recommended System Requirements: What They Actually Promise
Publishers rarely say what resolution or frame rate their minimum spec buys you — but a few now do. What current PC requirement boxes actually promise, using their own published wording.
NewsCall of Duty: Modern Warfare 4: What's Actually Confirmed
What Activision and Sony have actually published about Modern Warfare 4: the launch date (and the two-source discrepancy), price, beta schedule, and why there are still no PC system requirements.
NewsLate 2026 Game Release Dates: What's Actually Dated
Every date below is taken from the publisher's or platform holder's own listing, not a roundup — plus what is still undated, and how to check a release date yourself.
GuideCanon EF Lenses Still Worth Buying Used
Which used Canon EF lenses hold up today, from nifty-fifty primes to L-series glass, and what to check before buying secondhand.
TroubleshootingHome Wi-Fi Troubleshooting: What to Check Before You Buy New Hardware
The free fixes — placement, interference, band selection — worth trying before buying a new router or mesh system for slow or dropping Wi-Fi.
NewsHumanoid Home Robots Are Shipping in 2026 — Here's What They Actually Do
What 1X's NEO, Tesla's Optimus, and other home robots actually do in 2026, and how their real, supervised task range compares to the marketing.
ComparisonCanon EOS R5 vs R6: Which Full-Frame R Body Do You Need
Resolution, video ceiling, and the ISO advantage that actually favors the cheaper R6 — a spec-by-spec look at Canon's two July 2020 full-frame flagships.
NewsOpenAI's First Hardware Device: What's Confirmed, What's Rumour
What OpenAI has actually confirmed about its Jony Ive-designed device shipping in late 2026, and what's still reported rather than officially detailed.
GuideDSLR vs Mirrorless: The Real Trade-offs, Not the Marketing Version
Beyond the marketing claim that mirrorless is simply better — where DSLRs still win on battery life and price, and where mirrorless autofocus genuinely pulls ahead.
AINewsGTA 6: What's Actually Confirmed About the Release Date
Rockstar's confirmed November 2026 release date, pricing, and platforms for GTA VI, separated clearly from what's still unconfirmed about a PC version.
GuideTripod vs Star Tracker: Which Do You Actually Need First?
Why a star tracker isn't usually the right first astrophotography purchase, and the real signal that tells you when you've outgrown a static tripod.
GuideDo You Actually Need 4K or 8K Video Right Now?
What extra resolution actually buys you versus what it costs in storage and processing power, and why 4K is still the right answer for most people.
ComparisonCanon 6D vs 6D Mark II: Is the Upgrade Actually Worth It
What actually changed between Canon's original entry-level full-frame DSLR and its 2017 successor — autofocus, screen, ISO — and the video limit that didn't move.
GuideEquatorial Mounts Explained: Do Beginners Actually Need One
What an equatorial mount actually does mechanically, how it differs from the compact camera star tracker most beginners start with, and the real signal you're ready to step up.
GuideCamera Settings for Astrophotography: Manual Mode Explained
Why automatic modes fail at night, and how to build a manual exposure from aperture, shutter speed, and ISO for genuinely usable astrophotography.
GuideHow to Photograph the Moon (Without a Telescope)
Why Moon photography uses the opposite settings from the rest of the night sky, and what focal length and exposure actually produce visible surface detail.
ComparisonCanon EOS 70D vs 80D vs 90D: What Actually Changed Between Generations
A generation-by-generation breakdown of what actually improved between the Canon EOS 70D, 80D, and 90D, and how to pick the right one for your budget.
ComparisonCanon R10 vs R7: Canon's APS-C Mirrorless Lineup Explained
Why the R10 and R7 aren't a generational succession, and the one spec — in-body stabilization — that matters more than everything else on this comparison.