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オリジナル投稿者: Owen Cunneely ,

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There are several things that may be contributing to a system slowdown. One major factor may be the amount of free hard drive space on your computer. When you run apps, they use ram, however, they need to use more ram that what you have, so it pages the hard drive. If your hard drive has no free space, this process is interrupted, and your computer will slow down. You can check your hard drive space by going to Disk Utility and clicking on the hard drive (stats are at the bottom of the window). If you have anything less then 60 GB - 80 GB then you may need to a.) get a bigger hard drive or b.) delete unneeded files and folders. This will free up valuable space for the virtual memory and speed your computer up. (You can also select your "Macintosh HD" disk in Disk Utility and preform a permissions repair to speed some things up.) I also suggest that you quit all your apps, then open up an app called Activity Monitor. Once open, select "All Processes" from the top of the window. This will show you all the process that you currently have running on your computer, since there may be some sort of background application that is eating up your resources. Do this and see if there are any process showing up that are running over 10% CPU when all the apps are closed, then list them here. This will help give us an accurate feel of what your computer is like, so we can give you the proper assistance in speeding it up. As for the battery, those can easily be replaced and are found here on iFixits website.

Hope this Helps

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