Buying a second-hand computer can be great value — as long as you know what you’re looking at. Use the tips below to assess condition, specs and price before you hand over money.
Please note: This guide does not constitute legal advice. Any information provided here should not be construed as legal advice or legal interpretation. DoneDeal does not accept any liability for any loss caused by reliance on this guide.
Price Check
Before you buy, ask the seller:
How old is the computer?
What was its original retail price?
Computers depreciate quickly, especially once they’re 3–4+ years old. Compare similar listings on DoneDeal (and elsewhere) to get a sense of fair second-hand value.
Also bear in mind: newer models often have better battery life, faster performance and longer software support.
Test It Properly
When viewing in person, ask the seller to power it on and demonstrate that it works.
Check that it:
Boots normally (ideally within a minute)
Opens apps without freezing
Connects to WiFi
Plays video and audio clearly
If a seller won’t show it working, it’s safest to walk away.
Memory (RAM)
RAM affects how smoothly a computer runs multiple tasks.
8GB: Suitable for browsing, email, office tasks
16GB: Better for multitasking, streaming, everyday performance
32GB+: Ideal for gaming, video editing, professional software
You can usually check this in System Settings or About.
Storage
Storage type matters as much as storage size.
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SSD (Solid-State Drive): Faster, quieter, better performance
Aim for 256GB SSD minimum for general use
HDD (Hard Drive): Slower, mainly useful for bulk storage
If you can, choose a computer with an SSD — it makes a noticeable difference.
Processor (CPU)
The processor is the “brain” of the computer.
Common examples:
Intel: Core i5 / i7 / i9 (often listed by generation e.g. 13th/14th Gen)
AMD: Ryzen 5 / Ryzen 7 / Ryzen 9
Apple: M1 / M2 / M3 (MacBooks and iMacs)
For general use, Core i5 or Ryzen 5 is usually plenty. If you’ll be gaming or doing creative work, aim higher.
Graphics (GPU)
Graphics can be integrated or dedicated.
Integrated graphics (Intel Iris, AMD Vega, Apple M-series): Fine for browsing, video, light gaming
Dedicated GPU (Nvidia GeForce/RTX, AMD Radeon RX): Better for gaming, 3D work, video editing
If performance matters for gaming or creative work, confirm the exact GPU model before buying.
Software & Operating System
Check which system it’s running:
Windows 10 / Windows 11
macOS
ChromeOS (Chromebooks)
Linux
Before you buy, ensure:
The OS is genuine and activated
Any accounts are signed out
Login/passwords are cleared or the device is reset appropriately
Ports & Connectivity
Check it has the connections you need, such as:
USB-C / USB-A
HDMI or DisplayPort (for monitors/TVs)
Audio jack (some newer models don’t include one)
SD card slot (optional)
Also test:
WiFi
Bluetooth
Battery & Power
For laptops, battery condition matters.
Unplug it and see how it performs on battery
Check battery health or cycle count (Windows/macOS tools can help)
As a rough guide, fewer than 500 cycles is generally preferable
If the battery drains quickly, factor in replacement cost.
Screen & Display
Check:
Size (13–15” is a common balance of comfort and portability)
Resolution (aim for Full HD 1920×1080 or higher)
No dead pixels, discolouration, flickering or pressure marks
If you’ll use it daily, a good screen is worth prioritising.
Webcam, Microphone & Speakers
Test:
Camera quality
Microphone pickup
Speaker clarity
If it has a privacy shutter or camera switch, check it works.
Warranty, Returns & Proof of Purchase
Ask:
Is there any remaining manufacturer warranty or extended cover?
Can you provide a receipt or proof of purchase?
Some refurbished sellers include 6–12 months warranty, which can be a strong sign of reliability.
Upgrades & Accessories
If you may upgrade later, ask:
Can RAM or storage be upgraded?
Can it support external monitors or docking stations?
If accessories are missing (charger, keyboard, mouse), they’re often easy to source — but cost should be factored into the deal.
Quick Buyer Checklist
Before completing the sale:
Power it on and confirm everything works
Check specs (RAM, storage, CPU, GPU)
Confirm OS is genuine and updated
Inspect for damage, missing keys, cracks or loose ports
Ask for proof of purchase/warranty (if available)
Meet in a safe, public place and bring someone if possible
Be Smart, Deal Smart
Meet in person, inspect carefully, and avoid paying before you’ve seen the computer working. If anything feels off — rushed sale, vague answers, or a price that’s too good to be true — it’s fine to walk away.
Contact Us
If you have any further questions or would like to chat, please reach out to our Customer Support team.