The first thing to do is ensure your MacBook Pro turns on. This is easy to check by listening to fans and looking at the screen.
Suppose you see lines or dead pixels that indicate water damage and require a new display. Also, test the battery.
Battery
Most modern MacBooks are built with “built-in” batteries glued into the framework. This is both safer from a consumer standpoint and allows Apple to make their laptops thinner. As a result, you need help to replace these batteries.
The best way to determine whether it’s time for a battery replacement is to check the maximum capacity of your current one. You can do this by clicking the Apple menu and selecting System Report. This will display the ‘Power’ section, including the ‘Service Battery’ warning and cycle count.
Consider a DIY replacement if your MacBook Pro or Air’s’ Service Battery’ warning is short. However, be warned that you’ll need a few tools (Torx screwdrivers, adhesive remover, spudgers, and plastic cards) and about 30 to 120 minutes of your time.
Hard Drive
If your Mac isn’t responding to commands, is running slowly or has lost some features, the hard drive may be the problem. Hardware replacement with a new one is an easy maintenance task. It takes only a few minutes but requires technical knowledge and specialized tools. Check the guides for your exact Mac model to get specific instructions.
Most models of MacBook Pro use traditional hard disk drives with moving parts. Swapping them out for an SSD (solid state drive) can speed up the system and improve performance when working with resource-intensive applications. You can also install a larger SSD for extra storage space. However, if the drive is full, OS X won’t be able to optimize disk performance, and your laptop will run slower.
Memory
RAM is your computer’s brainpower for on-demand tasks. More memory means your Mac can do more simultaneously, from loading websites and editing videos to processing photos and running apps.
Upgrading RAM is relatively easy, but there are risks, as with any tinkering with your computer. You could damage sensitive components or invalidate your warranty.
First, shut down your Mac Pro and wait ten minutes to allow the internal components to cool. Next, disconnect the power adapter and any Ethernet cables connected to your Mac Pro. Locate the battery release latches on each side and slide them up.
Graphics Card
The graphics card (GPU) in your MacBook Pro makes it capable of running games and other high-performance software. It also lets your laptop’s display output look sharp and clear.
Unless your MacBook is really old, you should be able to find a new GPU that will work well with it. Check your system requirements for whatever games you want, and consider any in-game optimizations that might help boost performance.
If you need to become more familiar with working on computers, it may be best to have the GPU repaired by someone else. There are many options, but some might not be as reliable as Apple repair services.
Motherboard
Like any other piece of hardware in a laptop, the logic board can experience damage and deterioration over time. It’s where all external devices are connected so that a defective motherboard can cause problems with your Mac’s ports.
It can also affect your display, causing it not to turn on or exhibit odd behavior, such as a grayscale or scrambled image. This is a sign of a logic board issue and should not be ignored.
First, remove the screws on both of your connector shields. Depending on your device’s model, these may be Phillips or Torx screws. Next, use the tip of your spudger to flip the retaining flap on your trackpad ribbon cable socket. Be careful not to pry on the socket itself.
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