Just Laptop — 30-Point Quality Certificate
✓ Battery health (>80%)
✓ Display brightness & dead pixels
✓ Keyboard & trackpad
✓ RAM & SSD health check
✓ USB, HDMI, WiFi, Bluetooth
✓ Webcam, mic, speakers
✓ Hinges & chassis
✓ Genuine OS licence
✓ Thermal & charging port test