iMac 27" 2017 random freezes

Sdahe

macrumors 68000
Original poster
Oct 26, 2007
1,678
17
San Juan, PR
Hello,

I have a 27" 2017 iMac 5K for a year and now it's getting random freezes. The computer seems to keep working but I get no response from the keyboard or mouse. A few months back I installed Majove and everything was running smooth with no problems... how can I know whats happening?
 

Lethcoeb

macrumors member
Jun 18, 2011
34
8
Houston
If you search you’ll find more of these on the forum. I had a similar problem with the same model which I had to return. I had to unplug and replug before it would reboot, and eventually it would reboot at all. Contact Apple!
 

Sdahe

macrumors 68000
Original poster
Oct 26, 2007
1,678
17
San Juan, PR
One interesting thing... I unplugged the external HD that I use for Time Machine and I haven't seen another freeze.. hummmmm
 

CoastalOR

macrumors 68020
Jan 19, 2015
2,494
908
Oregon, USA
One interesting thing... I unplugged the external HD that I use for Time Machine and I haven't seen another freeze.. hummmmm
Good catch.
Use Disk Utility to check the external HDD you use for Time Machine. If it has a problem then Finder can get bogged down trying to communicate with it.
 

UbuntuFu

macrumors regular
Aug 16, 2007
214
120
I had random OS freezes where I had to turn it off by holding the power button.
Ran the Apple Diagnostic tests and it turns out I had a bad memory module.