Mac slow, spinning wheel

richwhite08

macrumors newbie
Original poster
Aug 9, 2015
10
0
I have a MBP, mid 2012 but purchased last year, that is being very slow. Generally runs fine but opening things is slow, even system preferences, and it frequently has spinning wheel

It has 10gb ram, an 8gb and 2gb sticks. It was like it on Yosemite and is still like it on El Capitan, even with just a few things open. Any way to diagnose it?
 

richwhite08

macrumors newbie
Original poster
Aug 9, 2015
10
0
Update: it got like this when kernel task got to be large and a reboot fixed it. Kernel task is currently at 900mb, which is higher than normal. Why would that be?
 

richwhite08

macrumors newbie
Original poster
Aug 9, 2015
10
0
Update: failed hard disk! Three weeks left on the warranty so should be a simple replacement
 

ApolloBoy

macrumors 6502a
Apr 16, 2015
734
246
San Jose, CA
Perfect time to stick an SSD in there if you ask me. An SSD will make your cMBP both more reliable and much faster compared to a standard hard drive.
 
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