I engaged "Dave's Computer" to build a new custom build Windows 11 computer as replacement for the Windows 10 machine. I presented my thoughts and needs to Dave about the new unit and he asked some basic questions as to my needs and want for the new unit. We touched on cost for the unit and I left...
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Custom, Boutique & Prebuilt Gaming PCs · Dave's Computers, Somerville NJ
Custom PC Repair and Upgrades in NJ
A custom PC that crashes, won't POST or can't keep up with the games you play doesn't need to be replaced. It needs the one part that's wrong found and fixed, or the one or two parts that are holding it back swapped for better ones. That's what I do at my bench in Somerville, NJ: diagnosis, repair and upgrades for home-built towers, boutique prebuilts and big-brand gaming desktops, with a $149 diagnostic credited toward the work. Drop-off, no appointment.
⭐ 4.8 Stars · 430+ Google Reviews
🏆 Building and Repairing PCs Since 2011
📍 Somerville, NJ · Drop-Off Shop
🔧 $149 Diagnostic, Credited Toward Labor
📞 Call (908) 428-9558
🚗 Directions to the Shop
On this page
- Two paths: repair it or upgrade it
- Custom PC repair: what I fix
- Upgrade paths and what each one buys you
- Budget under $2,500? Upgrade instead of building
- Boutique and prebuilt brands I work on
- How a custom PC repair or upgrade works
- Guides for custom PC owners
- Directions to Dave's Computers
- Frequently asked questions
Two Paths: Repair It or Upgrade It
Most custom PCs that come through my door leave on one of these two paths. The diagnostic tells us which.
Repair it
$149 diagnostic, credited toward the labor
Something broke: it won't turn on, won't POST, restarts under load, artifacts in games, or a drive is failing. I test until the cause is confirmed, quote one flat number for the part and the labor, and stress test it after.
- No power or no POST
- Restarts, shutdowns, blue screens
- Graphics card artifacts or crashes
- Overheating and noise
- Failed drives and data recovery
- DIY builds that never started
Upgrade it
$149 diagnostic, credited toward the labor
Nothing's broken, it just isn't enough anymore. I tell you which one or two parts are holding the machine back on the games and software you use, and install them with the BIOS updated, memory at its rated speed and a stress test done.
- Graphics card upgrade
- Memory upgrade
- NVMe SSD upgrade with Windows cloned
- Processor and cooler upgrade
- Power supply upgrade to support a bigger card
- Platform upgrade for Windows 11 or a new CPU generation
One rule I follow on both paths. A decent new gaming or creator build from my shop starts at $2,500. Under that number, I'd rather put your money into the right parts of the tower you already own than into a new machine that has to cut corners on the graphics card or the memory. Here's why.
Custom PC Repair in New Jersey: What I Fix
Standard parts in a standard case. That's what makes a custom PC the easiest machine to repair properly.
| Symptom | What it usually is on a custom or gaming PC | What I do |
|---|---|---|
| Won't turn on at all | Power supply, front-panel wiring, a short from a standoff or a stray screw | PSU load test, board-out-of-case test. Custom PC won't turn on |
| Fans spin, no display, a light on the board | Memory training or an unstable kit, an old BIOS that doesn't know the CPU, an unseated card | Decode the LED, reseat, BIOS flash, one-stick test. Debug LEDs and beep codes |
| Restarts or shuts off in games | Power supply that can't handle the card's transient spikes, CPU or GPU thermal shutdown, an XMP or EXPO profile that isn't stable | Load test, temperature logging, memory test. Why a PC randomly restarts |
| Artifacts, colored lines, driver crashes | Graphics card memory or thermal pads, a failing card, a power connector that isn't fully seated | Test in a second system, repaste and pads, or replacement. Signs a graphics card is dying |
| Loud, hot, throttling | Dust, dried paste, a fan bearing, an AIO pump with air in it | Cleaning and thermal service, repaste, fan or cooler replacement |
| Blue screens and freezes | Memory, a failing NVMe drive, driver conflicts, an unstable overclock | Overnight memory test, drive health, Windows repair. WHEA errors |
| Melted or burnt power connector | A 12V-2x6 or 8-pin plug that wasn't fully seated, or a damaged cable | Card inspection, connector and cable replacement. Melted GPU power connector |
| Won't boot after an upgrade | Memory the board doesn't support at that speed, a BIOS that needs updating, a PSU short on connectors | RAM and motherboard mismatch, prebuilt won't start after upgrade |
| DIY build that never POSTed | Seating, standoffs, front-panel header, BIOS version, a bent pin | Custom PC diagnostic, or hand me the parts for PC assembly |
Every repair is quoted flat after the $149 diagnostic. Most are done in 24 to 48 hours, with same-day rush available, and most carry a 30 to 90 day warranty on labor. Gaming towers specifically are also covered on the gaming PC repair page.
Upgrade Paths, and What Each One Buys You
The order I'd do them in depends on the symptom. Which upgrade first walks through that decision.
Graphics card
The biggest single jump in game performance, and the first thing to look at when frame rates fall at high settings. Often needs a power supply with it.
Graphics card upgradeMemory
Fixes stutter and hitching when frame rates are otherwise fine, and lets a creator machine keep a timeline and a browser open at once. Installed at the kit's rated speed.
RAM upgradeNVMe SSD
The upgrade people feel most. Boot, loads and every click get faster. Windows and your files are cloned across so you don't set anything up again.
SSD upgradeProcessor
When the CPU is pinned at 100 percent and the graphics card is waiting on it. Bounded by the socket: some boards have a long runway, others have none.
CPU upgradeCooler and thermal paste
For a processor that throttles or a tower that's loud under load. Air or AIO, with the fan curve set so it's quiet at idle.
Cooler upgrade · RepastePower supply
Required for most graphics card upgrades, and the fix for a tower that restarts under load. ATX 3.x units with the connectors a current card needs.
Power supply upgradeMotherboard and platform
CPU, board and memory together, keeping your case, drives, card and a healthy power supply. The path for a tower that can't take Windows 11 or a current processor.
Motherboard replacementCase swap
Same parts, a case with better airflow, filters, or room for the card you want next.
PC case swapReuse your parts in a new build
When the platform really is done, drives, a good power supply and often the graphics card carry over, which gets you a stronger $2,500 build.
Reusing old PC partsBudget Under $2,500? Upgrade Instead of Building
This is the advice you'll get at my counter whether you came in for a repair, an upgrade or a new build.
A decent new custom gaming or creator build from my shop starts at $2,500, and a workstation build at $2,000. I don't build below those numbers, because the only way to hit a lower price is to cut the graphics card or the memory, and those are the parts that decide whether the machine does what you bought it for. So when the budget is $1,200 or $1,500, the honest answer is to upgrade the tower you already own.
For most three- to five-year-old custom PCs, one or two of the upgrades above gets you most of the way to what a new build would do. A graphics card and the power supply to feed it, or memory and an NVMe drive, or a processor on a board that still has room. The $149 diagnostic tells you which ones matter on your specific machine, in writing, and it's credited toward the work. If the platform really has run its course, you'll hear that too, along with a real number for a new build and a list of what carries over. The details of new builds live on the custom PC build page, and the $150 consultation is credited in full when you approve a build quote.
What you won't get from me is a parts list to shop. The quote gives you the result and the price; the written spec sheet comes with the machine at pickup. I'm one technician, and that's how I keep the diagnostic focused on your machine instead of on pricing a shopping cart.
Bring the tower in. Tell me what you play or what you run and what it's doing wrong, and I'll put the answer in writing.
📞 Call (908) 428-9558Drop-off shop at 75 N Bridge St, Somerville NJ · Mon-Fri 10-5, Sat 9-2
Boutique and Prebuilt Brands I Work On
Boutique builders use standard parts, so their machines repair and upgrade like a custom build. Big-brand gaming lines are covered on the brand desktop pages.
iBUYPOWER
CyberPowerPC
NZXT BLD
Origin PC
Skytech Gaming
Digital Storm
Falcon Northwest
Velocity Micro
AVADirect
CLX Gaming
Alienware
MSI
Dell, HP, Lenovo, Acer, ASUS and Gigabyte towers are on the desktop computer repair page. If you're wondering whether a Dell or HP office tower can take a graphics card, that guide has the honest answer by form factor. Common prebuilt failures are in prebuilt gaming PC common failures.
How a Custom PC Repair or Upgrade Works
Two trips to Somerville, one phone call in between.
1
Drop off the tower
Just the tower, plus your Windows password and a note on what it's doing and what you play or run. If it's an upgrade, tell me the monitor's resolution and refresh rate; that sets the graphics card more than anything else.
Heavy card? Lay it flat on its side for the drive. How to bring a desktop in.
2
The $149 diagnostic
Power supply under load, memory test, drive health, temperatures during a stress run, graphics card in a second system if needed, BIOS version and settings. For an upgrade, I log what's actually limiting the machine on the software you use, rather than guessing from the spec sheet.
3
A flat quote by phone
One number for parts and labor with the $149 credited. If it's an upgrade, the quote names the result (what it will play, at what settings) and the price. If the machine isn't worth the spend, I'll say so and we'll talk about what carries into a new build.
4
Work, test, pickup
Quality retail parts with a manufacturer warranty, BIOS updated, memory at its rated speed, Windows and your files cloned when a drive changes, and a stress test before I call you. The written spec sheet comes with the machine.
Guides for Custom PC Owners
Written from the same order of checks I run at the bench.
Which PC upgrade should you do first?
Symptom-by-symptom priority order for gaming, office and creator machines, and where the platform wall is.
Read the guideSigns your graphics card is dying
Artifacts, crashes and black screens, and how to tell a failing card from a weak power supply.
Read the guideMotherboard debug LEDs and beep codes
CPU, DRAM, VGA and BOOT lights for ASUS, MSI, Gigabyte and ASRock, plus the first three checks for each.
Read the guideSigns of a failing power supply
Why a supply that turns on can still be bad, and what the load test shows that a plug-in tester can't.
Read the guideCan a Dell or HP office desktop take a graphics card?
The honest limits by form factor: slots, wattage and proprietary power supplies.
Read the guideDesktop not compatible with Windows 11?
Firmware fix, platform upgrade or new build, and how to tell which path you're on.
Read the guideIs my PC bottlenecked?
How to read CPU and GPU usage to find the part that's holding the rest back.
Read the guideWhy does my desktop randomly restart?
Power supply, heat, memory and the hidden blue screen, and the Event Viewer entry that tells them apart.
Read the guideDirections to Dave's Computers in Somerville, NJ
Downtown Somerville, one block off Main Street, behind Bank of America.
Dave's Computers, 75 N Bridge St, Somerville, NJ 08876Drop-off shop, Mon-Fri 10-5 and Sat 9-2. Street and municipal-lot parking around Main Street.
Directions to the ShopFrom Bridgewater
3 miles · about 10 minutes
Route 22 or Route 202/206 to the Somerville Circle, then Route 28 east (West Main Street) into downtown. Left onto N Bridge St.
Open in Google MapsFrom Hillsborough
5 miles · about 12 minutes
Route 206 north into Somerville, right onto West Main Street, then left onto N Bridge St.
Open in Google MapsFrom Bound Brook
4 miles · about 12 minutes
Route 28 west straight into downtown Somerville. Right onto N Bridge St.
Open in Google MapsFrom Piscataway
10 miles · about 20 minutes
I-287 north to Exit 17 (Route 202/206 south), then Route 28 east into downtown Somerville.
Open in Google MapsFrom Flemington
15 miles · about 25 minutes
Route 202 north to the Somerville Circle, then Route 28 east into downtown. Left onto N Bridge St.
Open in Google MapsFrom Princeton
18 miles · about 30 minutes
Route 206 north through Montgomery and Hillsborough into Somerville. Right onto West Main Street, then left onto N Bridge St.
Open in Google MapsTimes are typical drives outside rush hour. Call 908-428-9558 before a long drive if you want to confirm I'm at the counter. Custom PC pages for Edison, Flemington, Basking Ridge and Montgomery.
Google Reviews
What Customers Say on Google
Live from the Dave's Computers Google listing. Tap any review to read it on Google Maps.
4.8
★★★★★★★★★★Based on 434 Google reviews
I have been going to Dave's Computers for years because he always fixes my problems. I also use his anti-virus and it is as good as any, if not better, than others that I would have to pay much more for. If you're having problems, go to Dave's. He doesn't break the bank and he solves the problems.
View on Google
Over the last decade or so, whenever I had a computer problem, I went to Dave. I recently had a very worrisome crash; the system failed to boot up. (I hadn't needed to use him for about 3 years.) I paid the "rush fee" on Saturday when dropping the machine off with the weekend agent. By Monday...
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"As a Broker of over 40 years in New Jersey I rely on my computer help", which is the artery to my success and business. Thank goodness Dave's is here for me with the messes I get into with scammers, land grabbers and just uneccesary things that I pick up. The most effective virus program have ever...
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I had previously tried to build my own PC to no success. Even though right now it is really tough to get a PC built due to the price increases with RAM’s, GPU’s and other parts because of AI, I still really wanted to get one for myself. I came across Dave’s Computers online and went in for a...
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Custom PC Repair and Upgrade Questions From NJ Customers
What people ask before they bring a tower in.
Do you repair custom-built PCs in New Jersey?
Yes. Home-built towers, boutique prebuilts like iBUYPOWER, CyberPowerPC, NZXT, Origin and Skytech, and big-brand gaming lines all come across my bench in Somerville, NJ. A custom PC is standard parts in a standard case, which is exactly what makes it repairable: anything in it can be tested and replaced one piece at a time.
How much does it cost to upgrade a PC in NJ?
It depends on the part. The $149 diagnostic comes first and is credited toward the labor, and you get a flat parts-plus-labor quote before anything is ordered. A single upgrade like an SSD, memory or a graphics card costs far less than a new machine, which is why I recommend upgrading over a new build whenever the budget is under $2,500.
Should I upgrade my PC or build a new one?
Upgrade if one or two parts will get you where you want to be and the platform still has room. Build new when the processor, board and memory all need to change at once, or when you want a gaming or creator machine and can budget $2,500. Under that number, upgrading the PC you have is the better spend, and the diagnostic tells you which parts are worth it.
Can you upgrade a prebuilt gaming PC?
Usually, with limits. Boutique prebuilts use standard parts and upgrade like a custom build. Big-brand gaming desktops often have proprietary power supplies or motherboards, which caps what a graphics card upgrade can be. Part of the diagnostic is telling you what fits and what doesn't before you spend anything.
My DIY build won't turn on. Can you finish it?
Yes. A build that won't POST is one of the most common jobs on my bench, and it's usually a seating, BIOS or compatibility issue rather than a dead part. If you'd rather hand over a box of parts, my PC assembly service builds it, updates the BIOS, installs Windows and stress tests it.
Do I get a parts list with the quote?
The quote gives you the performance result and the price. The written spec sheet listing every component comes with the machine at pickup. Every part I install is a quality retail part with a manufacturer warranty.
How long do custom PC repairs and upgrades take?
Most repairs are done in 24 to 48 hours after you approve the quote. Single-component upgrades are usually done within a day or two of the part arriving, including cloning and stability testing. Same-day rush is available. Most work carries a 30 to 90 day warranty on labor.
What should I bring in for an upgrade?
The tower, your Windows password, and two facts: what you play or run, and your monitor's resolution and refresh rate. The monitor sets the graphics card more than anything else. Leave the monitor, keyboard and cables home. If you have parts from an older PC you'd like reused, bring those or a list of them.
Custom PC Repair and Upgrades in NJ, From One Bench
Bring the tower to 75 N Bridge St in Somerville. The $149 diagnostic finds what's wrong or what's holding it back, and it's credited toward whichever fix you choose.
📞 (908) 428-9558Mon-Fri 10am-5pm · Sat 9am-2pm · 75 N Bridge St, Somerville NJ · Drop-Offs Welcome