Smart Inspection Guide When Buying Second-Hand Laptops

How to Inspect a Used Laptop Before Paying

Pre-owned laptops offer incredible value for students and software professionals. When meeting a seller, perform these 5 technical diagnostic tests:

1. Check Screen Pixels: Open a full-screen white background image to check for dead pixels or backlight bleeding.
2. Inspect Battery Cycle Count: On macOS, check System Information > Power > Cycle Count. On Windows, run powercfg /batteryreport.
3. Test All Ports & Keyboard: Test every USB-C, HDMI port, headphone jack, and verify all keyboard keys register properly.