Artifacts on screen, crashes mid-game, black screens under load, or no display at all? Dave's Computers in Somerville, NJ diagnoses what's actually wrong first — then replaces or upgrades your graphics card with one properly matched to your power supply, your case, and the games you play. We've been building and repairing gaming PCs since 2011.
📞 Call 908-428-9558 📝 Request ServiceColored dots, checkerboards, stretched triangles, or garbled textures on screen — classic GPU memory or core failure.
Games freezing or crashing to desktop, "display driver stopped responding" errors, or driver timeouts under load.
Desktop works fine, but launching a game kills the display — a card failing exactly when it's asked to work.
The card powers up but the computer never shows an image — or shows it only on integrated graphics.
Screaming fans, sky-high temperatures, and thermal shutdowns mid-session. Sometimes fixable without replacement.
Discoloration or melting at the power connector — power off and bring it in. Don't keep gaming on it.
The 12VHPWR / 12V-2×6 connector on NVIDIA's highest-power cards keeps producing melted-connector reports — especially on the 575W RTX 5090, and especially with adapters, bent cables, or connectors that aren't fully seated. If you run one of these cards, connector inspection is part of any service we do — and if yours already melted, bring card and cable in for assessment before plugging anything back in.
EVGA left the graphics card business, and the support path for their cards has wound down. When one fails today, replacement with a current card is usually the practical answer — we'll help you pick the right successor.
Plenty of used GPUs for sale ran 24/7 in mining rigs. Worn fans, cooked thermal pads, and degraded memory are commonly reported. If you bought a used card that's acting up — or want one tested before you rely on it — we test cards on the bench.
Thermal paste and pads dry out after years of service, and temperatures climb until the card throttles or shuts down. Here's the honest part: sometimes the fix is a deep clean and fresh thermal material — a fraction of the cost of a new card. The diagnostic tells us which it is.
Big modern cards are heavy, and years of hanging off one bracket can stress the board and slot. If your card droops, a support bracket is cheap insurance — we'll flag it any time we're inside your case. A slot damaged by years of sag crosses into motherboard replacement territory — far better to prevent it.
A failed card is also an opportunity — and honest upgrade advice is the reason people drive to us from across Somerset County. When you come in for the diagnostic, we look at the whole picture before recommending anything: your power supply's wattage and available connectors (the #1 thing that limits GPU upgrades), physical clearance in your case, whether your CPU can keep up with the card you're eyeing, and what you actually play or create — 1080p esports, 4K single-player, video editing, and AI workloads all point to different cards. Sometimes the right answer is a mid-range card and a better cooler; sometimes it's the flagship; sometimes it's "your PSU can't feed either safely, and here's what that changes." You'll leave with a recommendation that fits your machine and your budget — not the most expensive box on a shelf. And if the math tips toward a whole new machine instead of an upgrade, our custom PC builders will tell you that straight, too.
Walk in with the computer — no appointment needed. Tell us what it's doing.
$75, credited toward the repair. We confirm it's the card — not the PSU, drivers, or heat.
Exact quote with options — like-for-like or upgrade, matched to your system. Your call.
Clean install, fresh drivers, stress tested with temperatures verified. Then pick it up.
Dave's Computers · 75 N Bridge St, Somerville, NJ 08876 — right behind the Bank of America in downtown Somerville.
Hours: Mon–Fri 10am–5pm · Sat 9am–2pm · Walk-ins always welcome.
Getting here: we're minutes off Route 202/206 and Route 22, with easy access from I-287 — about 10 minutes from Bridgewater, Raritan, Hillsborough, and Manville, and an easy drive from anywhere in Somerset County. Take the Somerville exit toward downtown, and North Bridge Street is just off Main Street.
It starts with the $75 diagnostic, credited toward your repair. Because the total depends heavily on which card your system needs — entry-level and flagship GPUs are hundreds of dollars apart — we quote the exact card options and full price after the diagnostic, before any work begins. You choose the card and budget; we handle the rest.
You often don't — that's the point of diagnosing first. Failing power supplies, corrupted drivers, overheating from dust, a monitor plugged into the motherboard instead of the card, and bad cables all imitate GPU failure. We test with known-good parts and tell you what it really is.
Yes — that's half the service. We check your power supply's wattage and connectors, your case clearance, and your CPU, then match a card to what you actually play or work on. You get a recommendation that fits your machine, not a generic "buy the biggest one."
Sometimes. Modern cards draw more power and use different connectors than older ones — this is the most common hidden cost in a GPU upgrade. We check your PSU as part of the recommendation and tell you up front if the card you want needs more power than you have.
Yes — bring the card and the computer, and we'll verify it fits your case, slot, and power supply before installing, then do the full driver cleanup and stress test. The most common problem with self-bought cards is a power supply that can't feed them, so we check that first.
It can be — used cards are a real way to save money — but the used market includes a lot of ex-mining cards with worn fans and cooked thermal material. If you're buying used, we can bench-test a card and tell you what shape it's really in before you trust it.
Not always, and we'll say so. Years-old thermal paste, dried pads, and packed dust make healthy cards run like dying ones. A deep clean and fresh thermal material sometimes brings temperatures right back down for far less than a replacement. The diagnostic sorts one from the other.
It's real and still being reported. High-power NVIDIA cards using the 12VHPWR / 12V-2×6 connector have produced ongoing melted-connector reports, usually involving adapters, tight cable bends, or connectors that weren't fully seated. When we install or service one of these cards, connector seating and cable routing get specific attention — and if yours shows discoloration, stop using it and bring it in with the cable.
No — laptop graphics are built into the board and aren't swappable the way desktop cards are. If your laptop's graphics are failing, it's a different conversation — start at our laptop repair page or call us with the model.
No. Your files live on your storage drives — a graphics card swap doesn't touch them. You'll come back to the same computer, just with working graphics.
Once the card is in hand, the swap, driver cleanup, and stress testing are usually done same or next day. If we're sourcing a card for you, timing depends on availability — we'll give you a real date with the quote.
All the time — prebuilt gaming rigs use standard parts, and GPU failures are one of the most common reasons they land on our bench. See our gaming PC repair page for the full brand list.
$75 diagnostic, credited toward the repair · Honest recommendations matched to your system · 75 N Bridge St, Somerville NJ (behind Bank of America) · Mon–Fri 10–5 · Sat 9–2.
📞 Call 908-428-9558 🗺️ Get Directions