By A refurbished laptop can be a good buy, but only the exact machine in front of you matters. Run these 12 checks before you pay: a bad machine shows itself in about half an hour.
In short: Check the battery report, the warranty terms, the serial number, the screen, the keyboard, the ports and the SSD before you hand over money. Buy when every check passes and the seller puts the warranty and return in writing.
Walk away when the battery is worn out, the serial number does not match, an account is still signed in, or the seller will not let you test the machine.
Key takeaways
- Check the battery report first: full charge capacity against design capacity shows if a new battery is due soon.
- A grade means only what the seller says it means, so get the warranty and return terms in writing.
- Match the serial number on the base, in Windows, and on the receipt.
- Test every key, every port and the trackpad, and open a plain white and a plain black screen.
- Wipe the machine before you use it: it may still hold the last owner’s files.
Refurbished, used or new: know what you are buying
Refurbished, used and new are three different promises. A refurbished laptop has been checked, cleaned and repaired, and it usually comes with a warranty from that seller. A used laptop is sold as it is. Read our comparison of a refurbished laptop against a new laptop if you are still weighing the two. It helps to understand best laptop for seniors before going further.
Grading terms add confusion. Sellers grade machines as A, B or C, or as excellent, good and fair, but there is no shared standard behind those words. Ask what each grade covers: screen marks, case marks, battery condition, and whether a charger is included.
Set your budget first with our guide to how much to spend on a laptop: the saving over new should cover a new battery if the report shows wear.
Before you meet the seller
Bring a USB drive you can copy a file to, a cable that fits the laptop ports, and a phone flashlight. The drive tests the ports, the flashlight shows scratches a dim room hides, and the cable proves the charging port works with your own lead.
Ask four questions before you travel: what does the grade cover, how long is the warranty and what does it cover, what is the return window, and is the machine wiped and signed out of every account. Meet where there is power, light and time, and tell the seller you will run the full checklist.
The 12 checks at a glance
Use this table as your scorecard. One fail does not always end the deal: a missing charger is fixable, while a locked account is not.
| Check | What good looks like | Walk away if |
|---|---|---|
| 1. Seller and listing | Photos of this machine, full specs | Stock photos only, missing specs |
| 2. Grade and warranty | Grade explained, terms in writing | No warranty, no return, no terms |
| 3. Serial number | Same on base, Windows and receipt | Numbers differ, label removed |
| 4. Outside and hinges | Clean case, lid holds at any angle | Cracked hinges, lid flops shut |
| 5. Screen and backlight | Even light, no dead pixels or marks | Dead pixels, lines, uneven light |
| 6. Keyboard and trackpad | Every key works, trackpad clicks | Dead keys, sticking key, dead zones |
| 7. Battery health | Full charge near design capacity | Capacity far below design, swelling |
| 8. Ports and webcam | Every port works, camera and sound | Dead port, no picture, no sound |
| 9. SSD health | SMART Good, full capacity | Caution or Bad, wrong capacity |
| 10. Fans and heat | Fan quiet, base warm not hot | Grinding fan, no fan, heat shutdowns |
| 11. Accounts and locks | No account signed in, no password | Account signed in, BIOS password |
| 12. Paperwork and return | Receipt and terms in writing | No receipt, sale final, no cover |
The 12-step checklist
Work through these steps in order, with the laptop plugged in, and write down anything that fails.
- Check the seller and the listing. Compare the machine with the listing: model, processor, memory and storage should match. If the listing used stock photos, ask for photos of this exact machine.
- Read the grade and the warranty. Ask what the grade covers, and get the warranty length and return window in writing. If the seller will not write the terms down, treat the machine as sold with no cover.
- Match the serial number. Read the serial from the label on the base, run wmic bios get serialnumber in Command Prompt, and compare. Check it against the receipt and the maker warranty lookup.
- Inspect the outside and the hinges. Check the lid, palm rest and base under your phone flashlight for dents and cracks. Open and close the lid slowly: it should stay where you leave it.
- Test the screen. Open a plain white image, then a plain black image, at full brightness, and look for dead pixels, lines and marks. Lines or uneven light mean the panel is failing.
- Test the keyboard and the trackpad. Open a text editor and press every key, including function keys, arrows, Delete and the space bar. Then draw slow circles on the trackpad and test tap and two finger scroll.
- Read the battery report. Run powercfg /batteryreport as administrator, open the HTML file it creates, and compare Full Charge Capacity with Design Capacity. Note the cycle count too.
- Test every port, the webcam and the speakers. Plug something into each USB port, the charging port and the headphone jack. Open the camera app, then play a short clip and listen to both speakers.
- Check the SSD. Check the storage size in Settings matches the listing, and run a free SMART reader such as CrystalDiskInfo. Good with the full capacity is what you want. Caution or Bad means the drive is failing.
- Listen to the fan and feel the heat. Open several apps and a video and listen: the fan should spin up smoothly and settle, without grinding. Warm is normal, hot is not, and a laptop that shuts itself down has a cooling fault.
- Check accounts and locks. Open Settings > Accounts and confirm no account is still signed in. Ask the seller to open the BIOS setup screen to show there is no BIOS password. On a Mac, check that Activation Lock is off.
- Collect the paperwork. Get the receipt, warranty terms and return window in writing, with the serial number on it. Photograph the receipt before you leave.
How to read the battery report
The battery is the part most likely to disappoint you after the sale. On Windows, right-click Start, choose Terminal (Admin), type powercfg /batteryreport and press Enter, then open the HTML file it creates and look at the Installed batteries section. Microsoft documents the command in its powercfg reference. There is more on air cooler selection in a separate guide.
Design Capacity is what the battery held when new, and Full Charge Capacity is what it holds now. A battery that still holds 80 percent or more of its design capacity is in fair shape; one far below that gives short unplugged sessions.
The report also shows the cycle count. On a Mac, open System Information and look under Power for Cycle Count and Condition. Our guide to how to check laptop battery health covers the same report in more detail.
Stop if the battery is swollen. A base that rocks on a flat desk, a trackpad that clicks oddly, or a visible bulge can mean a swollen battery. Do not charge the laptop, do not press on the bulge, and do not puncture the battery.
The CPSC advises against crushing or puncturing a lithium-ion battery, since that can cause an internal short and overheating. Read our guide to what to do with a swollen laptop battery first.
Opening the base is a job for later, after the sale and after the wipe. If you do open a machine you own, power it off, unplug it, and disconnect the battery first.
A precision set with a Phillips #0 bit and a plastic spudger opens most laptop base panels without damage.
See options on AmazonWarranty, serial number and paperwork
The warranty is where a refurbished laptop earns its price, so read it before you pay. Ask how long the cover runs, whether it covers parts and labor, and how you make a claim.
A seller warranty is a promise from the shop; a maker warranty follows the serial number. Check the maker warranty yourself: on Dell machines, enter the seven character Service Tag on Dell Support and open the warranty details.
The receipt should show the model, the serial number, the grade, the warranty length and the return window. Photograph the receipt and the warranty terms on your phone before you leave.
What to do the day it arrives
Wipe the machine before you sign in or save anything on it. A used laptop may still hold the last owner’s files, accounts and settings, and the only clean start is a full reset.
On Windows, open Settings > System > Recovery, choose Reset PC, then choose Remove everything. Our guide to how to wipe a laptop before selling covers the same reset from the seller’s side.
We go through laptop selection criteria step by step in its own article.
Once the machine is clean, run the checks again at home. Test the keyboard and trackpad, plug in your own charger, and run the battery report again after a full charge. A fault that was easy to miss in a cafe is easy to catch in a quiet room.
Update Windows and the drivers before you install your own apps: open Settings > Windows Update, install everything offered, then check the maker’s support site for driver updates for your exact model.
A spare USB drive lets you test every port and carry the boot media for the drive check.
See options on AmazonMistakes to avoid
1. Skipping the battery report. A laptop that looks clean can still have a worn battery, which turns a portable machine into a desktop. Fix it by running powercfg /batteryreport before you pay.
2. Trusting the grade without reading what it covers. Grades are set by each seller, not by a shared standard. Fix it by asking what the grade covers and getting the answer in writing.
3. Testing only the screen and skipping the ports. The screen is the part everyone checks, while a dead USB port hides until you need it. Fix it by plugging something into every port, including the headphone jack.
4. Paying before checking accounts and locks. A machine with the last owner’s account still signed in, a BIOS password, or Activation Lock is one you cannot fully own. Fix it by checking Settings > Accounts and asking the seller to show the BIOS setup screen.
5. Forgetting the wipe and the return window. A used laptop may hold the last owner’s files, and a fault may only show up after a day of use. Fix it by wiping the machine before you use it and testing it again at home inside the return window.
Frequently asked questions
Is a refurbished laptop safe to buy?
Yes, when it comes from a seller who checks the machine, puts the grade and warranty in writing, and lets you test it before you pay. Run the 12 checks in this guide, read the battery report, and match the serial number on the base, in Windows, and on the receipt.
How do I check battery health on a refurbished laptop?
Open Command Prompt as administrator, run powercfg /batteryreport, and compare Full Charge Capacity with Design Capacity in the Installed batteries section. A battery that still holds 80 percent or more of its design capacity is in fair shape. Note the cycle count, and walk away if the battery is swollen.
What warranty should a refurbished laptop have?
Ask for a written warranty that covers parts and labor, with a clear length and a way to make a claim. Read the terms rather than trusting a grade letter. Also check the maker warranty with the serial number on the maker’s support site.
Can I return a refurbished laptop if something is wrong?
Only if the seller offers a return window and puts it in writing with the receipt, so ask before you pay and keep the proof. Test the machine again at home inside that window, and report any fault at once with the receipt and your notes.
Should I wipe a refurbished laptop before using it?
Yes. A used machine may still hold the last owner’s files, accounts and settings, so wipe it before you sign in or save anything. On Windows, open Settings, then System, then Recovery, choose Reset PC, and choose Remove everything. Let the reset finish before you set it up as your own.
Bottom line: Buy the machine that passes all 12 checks with the warranty and return in writing, and walk away from one that fails on battery, serial number, accounts or screen. For more buying guides, see the Buying Guides hub.
Sources: Microsoft Learn, Powercfg command-line options; Dell Support, warranty status lookup; CPSC, Cell Phone Batteries safety guidance. Photos: Tahir Osman, MART PRODUCTION, Tima Miroshnichenko, Beyzanur K., IT services EU and Michael Burrows via Pexels. Diagram: ictservicecenter.com.