: Plug a device into every USB, HDMI, and charging port to confirm they aren't loose or broken from frequent use.

Before you buy, perform these physical and technical checks in-store to ensure the "deal" isn't a dud:

: This is the most critical check, as demo units are often left plugged in 24/7, which can degrade battery capacity.

: Run a quick video or several browser tabs to see if the fan becomes excessively loud or if the laptop gets uncomfortably hot. Negotiation & Protection Buying A Demo Unit At A Retail Store - Experts Exchange

: Use the command prompt ( powercfg /batteryreport ) to check the "Full Charge Capacity" against the "Design Capacity". Aim for 80-85% health or higher.