Hello, if a friend knows a lot about computers, bringing a friend is the best way. If not, you can only rely on yourself. As for the means used by swindlers in used computers, we can see through them in the following ways.

1, master the second-hand market, too low a price often means a low price trap.

2, carefully distinguish between old and new parts.

3. Bring a system disk. It is recommended to reinstall the system when buying a computer to prevent others from tampering with your configuration information.

4. Bring test software, such as 360 hardware master.

5. Ask for invoices and receipts.