Before you inspect the PC

Ask the seller for the exact model of every major component—not only “RTX gaming PC” or “i7”. The generation and model matter. An older Core i7 can be slower and less valuable than a newer mid-range processor.

  • Exact CPU and GPU model
  • Motherboard model
  • RAM capacity, speed and number of sticks
  • Storage model, capacity and type
  • Power-supply brand, model and wattage
  • Case, cooling and any replacement fans
  • Age of the build and reason for selling
  • Known faults, repairs, crashes or overheating

Request clear photos of the inside, rear connections and the power-supply label. Compare the written description with the photos. If important details remain vague, treat that uncertainty as financial risk rather than assuming the best.

Verify the specifications in person

Do not rely only on the listing title. Start the computer and confirm the hardware shown by Windows or a trusted hardware-information utility. Check that the CPU, GPU, installed memory and storage match the advertisement.

Simple rule: if you cannot verify a component, do not pay the price of the component the seller claims is installed.

Look for signs that the PC has been rebuilt from mixed parts: missing expansion-slot covers, loose cables, different screw types, damaged connectors or a motherboard that does not line up cleanly with the case. Mixed parts are not automatically bad, but careless assembly can create faults that appear later.

Check the physical condition

Dust and corrosion

Heavy dust can indicate poor maintenance and long periods of high temperature. Rust, residue or green corrosion around ports and screws may point to moisture exposure. A recently cleaned machine can still be fine, so focus on damage rather than expecting perfection.

Fans and noise

Listen for grinding, rattling or rapid fan speed changes. Confirm that all visible fans spin and that cables cannot touch the blades. Coil whine is not always a fault, but unusually loud electrical noise should affect what you are willing to pay.

Ports and display outputs

Test the ports you actually need. Make sure the monitor is connected to the graphics card rather than the motherboard when a dedicated GPU is advertised. Check USB, audio, network and Wi-Fi where relevant.

Run a short stability test

A desktop that reaches Windows is not automatically stable. Ask to see the computer under load for at least several minutes. A game, benchmark or stress test can reveal crashes, visual artefacts, thermal throttling and cooling problems.

  • Watch temperatures: compare results with normal expectations for the exact CPU and GPU, cooling setup and room conditions.
  • Watch the screen: flashing blocks, coloured dots, driver resets or black screens can indicate GPU instability.
  • Listen carefully: clicking storage, failing fans or sharp electrical sounds deserve investigation.
  • Check restart behaviour: unexpected shutdowns under load can point to heat, power or stability problems.

Do not install unfamiliar software supplied by a stranger. If testing is limited, increase your repair allowance and risk reserve—or walk away.

Check storage health and Windows status

Confirm the advertised storage capacity and whether each drive is an SSD or hard drive. Review drive-health information where possible, but remember that a “good” status does not guarantee future reliability. Budget for replacement if the drive is old, slow or holds important data.

Ask whether Windows is activated and whether the system will be reset before handover. Never depend on the seller's personal accounts, saved passwords or software licences. Plan to perform your own clean reset and security updates.

Price the risk, not just the parts

Start with realistic prices for genuinely comparable complete used systems. Then subtract the costs you may face immediately: missing storage, worn fans, a questionable power supply, travel, delivery, platform fees and the time required to repair or resell.

RigVerdict's calculator separates the visible costs from a risk reserve. That reserve is not a guaranteed expense—it is a buffer for defects, negotiation and surprises that your inspection may miss.

Offer discipline: decide your maximum offer before meeting the seller. A deal should still make sense after realistic costs and risk, not only in the best-case scenario.

Red flags that justify walking away

  • The seller refuses to show the PC working without a clear reason
  • Specifications change between the listing, messages and inspection
  • The serial labels or identifying stickers appear removed or damaged
  • The machine crashes, loses display output or shuts down under light testing
  • There are signs of liquid damage, burning or melted connectors
  • The seller pressures you to decide before you can inspect properly
  • The price is far below comparable systems and the explanation does not make sense

No single checklist can eliminate risk. Verify ownership and component details, meet safely, keep written records of the listing and agreement, and do not proceed if the situation feels wrong.

Your final five-minute check

  1. Confirm the CPU, GPU, RAM and storage match the listing.
  2. Inspect for damage, corrosion, heat and poor assembly.
  3. Run the machine under load and watch for instability.
  4. Calculate repair costs and add a realistic risk reserve.
  5. Compare the result with your pre-decided maximum offer.

This guide provides general information, not a guarantee, professional hardware inspection, legal advice or financial advice. It was prepared with AI assistance and reviewed for consistency with the RigVerdict calculator. Hardware claims and seller information should always be verified independently.