Take the Apple Hardware Test and Determine the Issues

Use AHT and diagnose issues with Mac’s hardware. There may be problems with Mac’s display, processor, storage or memory. Take help of Apple’s hardware test for ruling out most of the hardware failures. You will have a better experience with Mac. It is very rare that you face an actual breakdown of hardware. Most general hardware failure is RAM. Conducting Apple Hardware Test will check Mac’s RAM. It allows you to know about the issues. You may replace faulty RAM yourself and you will save many dollars.

Source: https://charliepcsupport.wordpress.com/2019/03/01/take-the-apple-hardware-test-and-determine-the-issues/