How to fix MacBook pro 13 mid 2010 having3 beep sound

Vyanne_john wrote:

How to fix my MacBook pro 13 mid 2010 having 3 beep sounds?

It is a RAM error— is this an old issue , new issue, what changed...?

You can try re-seating the RAM

MacBook Pro: How to remove or install memory - Apple Support

Mac are finicky about RAM requiring the exact specs...

Best to buy RAM from reliable source with the exact specs.

Usually a lifetime guarantee on RAM from third party source like:

https://eshop.macsales.com/shop/memory/Apple_MacBook_MacBook_Pro/Upgrade

Mac Compatible Memory | High Performance RAM | Crucial.com

https://www.crucial.com/products/memory/mac/memory-for-mac

Please advise... there are a few other known issues

Three beeps indicate a memory problem. Being that's a hardware issue, you might consider having Apple evaluate it.