If the hardware continues to be solid, then we can turn ourselves to software issues, which consume more time due to complexity relationships in installation and usage.You’ve probably tried to turn on your computer like you normally would, but instead of seeing the Windows logo, you heard four beeps. We continue to monitor the laptops with JAMF Casper and ARD software products. Otherwise, one hard drive and one trackpad in 300 laptops has failed in six weeks. One laptop did come in with the 3 beep POST and a RAM reseat and PRAM reset seems to have fixed the problem. In the case of student laptops at North Mahaska, the problems seen so far have been minor. Again, damage of some type has occurred with the CPU of the MacBook Pro, and will require a motherboard replacement in most cases. This failure is found in the central processing unit of the laptop. Generally, this problem will require a motherboard replacement.įinally, five beeps also indicates a fatal problem. Perhaps the ROM was corrupted by some electrical damage involving the ROM chip and circuitry. The ROM instructions for booting your computer will not function to startup the computer. Reseat the RAM modules and also reset the PRAM (parameter memory) on the MacBook Pro.Ī POST with four beeps is a bit more serious. It is also possible that the circuitry of the RAM banks in conjunction with badly seated RAM modules has cause a memory management issue. The possible problems are more likely to be a problem with the RAM seating in the module banks. The problem is most likely not RAM compatibility despite the results of Google searches. Three beeps indicates a tricker predicament.

Not all RAM modules are up to Apple's specification and it is wise to purchase RAM from vendors who explicitly state MacBook Pro compatibility. For instance, if the memory specification requires PC3-10600S DDR3 1333 MHz RAM, that is what should be procured and installed in the MacBook Pro. Two beeps on a MacBook Pro indicate that the RAM SO-DIMMs are not compatible. While this is not likely to happen in many cases, you will quickly know the issue. One beep seems self explanatory in that there are no RAM SO-DIMMs installed in the machine.

Apple macbook pro 3 beeps on startup