The slowness of the computer now it is running a newer (larger footprint, hungry for resources) system
is due in part to a need to have more physical RAM memory; the memory chips are upgradable through
replacement of both chips to higher capacity.
Also, the larger system upgrade files (plus slow internet download speeds, esp. if using Wi-Fi and not
Ethernet cable) were likely some of the reason why the upgrade was slow to load.
Another aspect of system function may be due to a need for OS X to use hard drive capacity as virtual
memory when there is insufficient installed Chip RAM. The drive has to read+write temp files to the
hard drive, and this is much slower than on the logic board between memory chips and the processor.
So with more chip RAM installed, there should be significantly less writing to the hard drive of swap files.
MacBook )13-inch, Mid 2010)
Introduced May 2010
Discontinued July 2011
Model Identifier MacBook7,1
Model Number A1342
EMC 2395
Order Number MC516LL/A
Maximum Memory 16 GB (Actual) -- 4 GB (Apple) original spec
Memory Slots 2 - 204-pin PC3-8500 (1066MHz) DDR3 SO-DIMM
• MacBook: How to remove or install memory - Apple Support
{Given your computer should have at least 8GB RAM installed to do justice with El Capitan
and the computer can use up to 16GB (two 8GB chips) the hardware now needs upgrade.}
The OS X Help can be found in among the Apple Menu bar items, the main window named Finder, the
far right item is Help. Note there should be a few ways to use it. The features of OS X El Capitan should
be where the information was in the Snow Leopard system. It used a similar Help.
Web pages in Apple Support (under OS X) can be helpful;
Mac - Official Apple Support
OS X - Apple Support:
http://www.apple.com/support/osx/
Also, separately there are different locations for OS X and Apps online.
Mac Help: http://help.apple.com/machelp/mac/10.11/#/
The internal hard drive could likely see an upgrade to a higher capacity and/or faster data speed;
this could enhance the usefulness of the later OS X and work better when using applications too.
An upgrade to a newer OS X and later applications, usually requires more system resources; so
additional upgrade in hardware should be expected. At some point, when you get used to reading
the specifications and minimal ones required for the computer to start up (no load) then add more
for the unit to be able to do more than sit at an idle... should mean something. If you choose at
some point to get a newer computer (as an upgrade, to run later software) consider these things;
the new models are shipped the the RAM memory soldered to logic board, so aren't upgradeable.
You'd have to know in advance what kind of load your work expectation would put on the unit, and
be able to purchase more processing power (with memory and drive, CPU, GPU, etc) known so
the investment would be practical and not too slow. The end user has few or no upgrades, with a
newer Mac, with few exceptions. With new ones, you buy the build and that is the upgrade path.
To get an use a suitable external storage drive for Time Machine backups, is an important thing to
do; also a separate drive to save excess storage to, and then you could remove files from the Mac
knowing you have a copy on the external. This would free up and let the Mac run better. You would
have to purchase additional external storage options. Fair examples are at OWC macsales.com
{OWC also has the correct spec quality memory chip upgrade parts, & guarantees them.}
The Etrecheck report shows some items that were in your Snow Leopard OS X 10.6.8, some of
them including adware, may or may not have made the trip to the newer El Capitan. That's some
thing to watch out for. You can avoid troubles by being careful what you click on; and avoid the
products such as cleanmymac, mackeeper, and other troublesome hyped junkware. Also, try &
avoid the trap of buying into antivirus since most AV apps use system resources and have nothing
to discover. There are few to none virus and most of the products would be late to the party if there
were anything; Apple OS X is better at protection. (Extensions in browsers can be problematic; a
few that affect Safari or others may give you fits; I've seen nothing much personally, but I am rather
pragmatic and do not believe everything I read; so I will not click on offers too good to be true, etc.
A second Etrecheck report may be an OK thing to run. Oh, some of the slowness in your Mac now
may be due to stuff that sometimes gets brought over into a new OS X from the old OS X. And a
fair amount of that may not work, because it pre-dates the latest function and software now available.
So it's usually good to have a Time Machine backup, and migrate only practical useful item over to
a computer after an upgrade to a newer system. (There is a ton of stuff to learn about; but helpful.)
Anyway, here's some things to read though. Note the examples of external storage options and
internal upgrade storage options for Mac portables, plus memory RAM chip, etc at OWC.
A fair way to search for upgrade parts:
https://eshop.macsales.com/MyOWC/
RAM upgrades for MacBook (see your MacBook7.1 among those listed here) for parts/specs:
https://eshop.macsales.com/shop/memory/Apple_MacBook_MacBook_Pro/Upgrade/DDR3_Wh ite
I've added to this post so it's a bit long now. Hopefully you don't fall asleep reading, or get too bored!
In any event...
Good luck & happy computing! 🙂