Finally, one of the most common issues for MacBook users is problems booting correctly. Along with some other problems, this can be resolved by clearing the PRAM settings.
Booting issues usually manifest as the computer freezing at the logo screen, or beeping a lot, while some of the other problems that can be sorted out by clearing the PRAM are graphical anomalies and general memory issues.
The PRAM is the parameter random access memory, and this can be reset by shutting down your MacBook and locating the following four keys (without pressing them):
With your fingers poised above the four keys, press the power button and then hold down the four keys simultaneously as soon as the computer comes on, and wait until the computer restarts before releasing them
Note that problems with the computer retaining PRAM settings on its own will indicate an issue with your battery (see above).
If none of these solutions worked, or if the problem seems to change after each attempted solution, it’s probably time to call an Apple specialist. Ultimately, it’s not worth causing a more serious problem by trying to come up with your own creative solution.