Yes, I know it's an old iMac, but it has been running fine for years.
It is still running El Capitan 10.11.6 - since this is older
This past Wed. night around 7:30pm, I noticed the pointer on my screen move smoothy as usual, but every 8-10 seconds it would severely slow down, stutter as if something big was running in the background taking up RAM. Almost felt like it was 'indexing." But what...I don't know? Checking Network monitor, I saw nothing unusual. As I opened Photoshop to work on some photos, the lag on the cursor became worse.
Space on my main HD is fine, about 668GB left of space out of 1TB. I ran virus, malware checks..nothing. Of course looking on Google a possible cause (and a fear) "Your HD may be failing" was one of the reasons "Mac was running slow" I already did a new Time Machine backup in case this is happening.
I've done PRAM, SMC resets. PRAM didn't do anything, but SMC seemed to work....but only for about 5min before the issue came back.
By that time I ended up turning off the iMac and calling it a night. Thurs., I booted up the Mac..seemed ok although I did notice the desktop screen, Icons took a longer than usual time to appear on my screen, we're talking 2-3 min! Not normal I think.
But the computer seemed ok all day, night.
Then yesterday, Friday. Felt sluggish again...and once again at 7:30, there goes the cursor again, acting choppy, sluggish.
So far today..eh, it just simply feels slower than usual. I did a Terminal command to check/repair permissions - something that is gone from the regular Disk Utility program now.. It fixed some issues.
I even checked router setting to see if I have unusual activity happening - (call me a tad paranoid, I have a new neighbor..that seems slightly odd, antisocial, I was wondering if he was stealing Wifi, so something else..not the case it appears.)
Another oddity is also "Sleep Mode" I put the iMac in sleep..
Usually the screen shuts off, after 30-40 seconds I will hear a "click" meaning the HD turned off. BUT..I kept hearing this "click" every 2-3 minutes like this HD shutdown was on a loop. When I woke up my iMac, it wasn't asleep - reason I can tell is because my WiFi icon was still on (usually that animates to connect back to wifi after "waking up.")
Right now I'm baffled.
It is still running El Capitan 10.11.6 - since this is older
This past Wed. night around 7:30pm, I noticed the pointer on my screen move smoothy as usual, but every 8-10 seconds it would severely slow down, stutter as if something big was running in the background taking up RAM. Almost felt like it was 'indexing." But what...I don't know? Checking Network monitor, I saw nothing unusual. As I opened Photoshop to work on some photos, the lag on the cursor became worse.
Space on my main HD is fine, about 668GB left of space out of 1TB. I ran virus, malware checks..nothing. Of course looking on Google a possible cause (and a fear) "Your HD may be failing" was one of the reasons "Mac was running slow" I already did a new Time Machine backup in case this is happening.
I've done PRAM, SMC resets. PRAM didn't do anything, but SMC seemed to work....but only for about 5min before the issue came back.
By that time I ended up turning off the iMac and calling it a night. Thurs., I booted up the Mac..seemed ok although I did notice the desktop screen, Icons took a longer than usual time to appear on my screen, we're talking 2-3 min! Not normal I think.
But the computer seemed ok all day, night.
Then yesterday, Friday. Felt sluggish again...and once again at 7:30, there goes the cursor again, acting choppy, sluggish.
So far today..eh, it just simply feels slower than usual. I did a Terminal command to check/repair permissions - something that is gone from the regular Disk Utility program now.. It fixed some issues.
I even checked router setting to see if I have unusual activity happening - (call me a tad paranoid, I have a new neighbor..that seems slightly odd, antisocial, I was wondering if he was stealing Wifi, so something else..not the case it appears.)
Another oddity is also "Sleep Mode" I put the iMac in sleep..
Usually the screen shuts off, after 30-40 seconds I will hear a "click" meaning the HD turned off. BUT..I kept hearing this "click" every 2-3 minutes like this HD shutdown was on a loop. When I woke up my iMac, it wasn't asleep - reason I can tell is because my WiFi icon was still on (usually that animates to connect back to wifi after "waking up.")
Right now I'm baffled.