In some cases, it’s not clear what problem is causing the Mac to spiral out of control, so one will probably need to take several steps to sort out what’s causing the problem. These ways will depend on whether the Mac is turned on anyway, of course, and we’ll see how to do a macbook repair that doesn’t boot right away.
Watch for serious errors
Is it true that one is seeing an error message? If so, record it (or on the other hand, if it’s simpler to take a photo using the iPhone or screenshot). The website has this article including common Mac error messages, so make sure it’s covered there, or one can do a quick Google search to see if someone else is seeing a similar error and the chance they’ve fixed it. Notice when the problem started. Was it right after one introduced another program or added a unit? Did one just do a product update?
Take a look at the schedule
Speaking of programming, is the product the most modern? Make sure one is running the latest version of macOS, one may have had a known issue that has been fixed.
Take a look at peripherals
Check to see if a specific fringe is causing the issue: Turn off everything connected to the Mac and see if that resolves the issue.
Take a look at the circle’s space
Notice how much circle space one has accessible. Go to About this Mac > Storage. The website generally tells one that one has 10% of all free space in the circle.
Take a look at Activity Monitor
This will show if something is accumulating memory or CPU. Go to Applications > Utilities > Activity Monitor (or click cmd + space and start composing Activity Monitor). Snap-on Memory to check if there is something accumulating memory. So at that point, click on CPU to check if something is blocking the CPU. The website took a closer look at memory accumulation issues and how to fix them with Activity Monitor.
Run Disk Utility
Applications > Utilities > Disk Utility (or click cmd + space and start composing Disk Utility) to check if there’s a problem with the circle. Find out how to use Disk Utility here. Note that Disk Utility has undergone a minor overhaul in Mac OS X El Capitan and some of the cycles have changed.