How to check hardware and software before buying a used Windows PC

When buying a used Windows PC, it's important to check both hardware and software to ensure it meets expectations. Use the Windows System Information tool to verify system specs and connected components. To confirm the Windows license is genuine, connect to the internet and check for updates. Run commands in Command Prompt to verify activation status. Stress test the CPU and GPU using tools like OCCT to assess performance under load. Check USB ports and RAM health using Device Manager and Windows Memory Diagnostic. For storage, test read/write speeds with CrystalDiskMark and check health with CrystalDiskInfo. These checks help ensure the PC is in good working condition.