How to Reset NVRAM and PRAM in Mac System

Even though Mac systems are unquestionably great and show few signs of a problem, but when a problem arises in the system, it could become a headache for the user until it is resolved. There are times when the problems occurring in the system are conventional and can get easily resolved. But the rare problems in the Mac become intimidating as the solutions are entirely unknown. The fun fact is that sometimes these rare problems are very easy to resolve and users can easily prevent the unexpected behavior of their systems. NVRAM and PRAM issues are one the unusual problems which hardly occur in the system. Hence is essential to understand the NVRAM and PRAM in brief with a well-explained method to resolve the issue in Mac system.

NVRAM, a short form for Non Volatile Random Access Memory is an essential small storage space to store the quick settings like time zone, volumes, screen resolution, etc. in Mac computers so that the system can access it. NVRAM is used in newer Mac computers, instead of PRAM. Now you might be wondering about PRAM. Well, it is used in older versions of Mac computers to perform quite similar functions to PRAM systems. It stands for Parameter Random Access Memory and is now replaced by NVRAM in the new Mac systems.

Why is it necessary to reset NVRAM or PRAM?

Sometimes, these two random access memory locations get corrupted in the system by several issues. The system suddenly starts showing problems like –

  1. Mac will not charge properly.
  2. Volume is hard to control.
  3. The external devices will not work properly.
  4. Incorrect Date and Time Zone.
  5. Screen resolution keeps changing.
  6. Drives are not appearing in Mac.

If the Mac is facing any of the problems, then don’t worry. The problem can be cured within in a moment by resetting the PRAM and NVRAM. So let’s see how to reset NVRAM and PRAM in Mac systems.

How to reset NVRAM or PRAM on Mac

  1. First, you need to disconnect the external drives, but you will need a keyboard.
  2. Ensure that your volume is now low by pressing the Volume Up key.
  3. Click the Apple icon and go to Shut Down.
  4. Click Shut Down to turn off your Mac.
  5. Now turn on your Mac again and press the Command + Option + P + R keys.
  6. Keep holding the keys wait until the Mac restarts.
  7. When you hear the startup tune, release the keys.

The procedure to reset the NVRAM and PRAM is same, so you don’t have to be doubtful while following the method to reset NVRAM or PRAM. Once it is done, you may require reconfiguring some settings. But if you see some screen resolution issues, then there must an external device attached with the system affecting the whole process of reset. In that case, you will need to remove the device and follow the same process.

John Martin is a Microsoft Office expert and has been working in the technical industry since 2002. As a technical expert, Samuel has written technical blogs, manuals, white papers, and reviews for many websites such as

1 thought on “How to Reset NVRAM and PRAM in Mac System

  • Even with 10.13.6 (latest update) installed, the steps you state will fix the “Sleep Wake” problem do not work. Apple acknowledges this is currently being looked at, but for now, there is no fix. They say just keep installing updates until it gets fixed. Given how long this has been going on that’s not very satisfying.

Leave a Reply

Your email address will not be published. Required fields are marked *