Battery and Fan Problems after DOWNgrade

[whoooop]

Due to some (minor) trouble with the running system i recently upgraded from Mavericks to Sierra. But as I wasn't really happy with the changes in the os and the still occurring software problem (md worker, quick look, spotlight) i decided to downgrade by using an old time machine backup.

Ever since the downgrade my fans are constanty running. So much so that I fear that my Macbook will take off any second! It is really loud and sooo annoying! Also, and maybe because of the fans, my battery life is down to less than 1,5 h!!!

When I first upgraded to Sierra the fans would randomly turn on and stay on for quite some time, but as others reported that problem, although annoying, I didn't think much of it. The battery would actually last about two hours longer than under Mavericks (5h).

I did all the usual work up.
SMC and Pram reset.
No browser as culprit and so on.
I cleaned up the hardware.
CPU is really high though.

Not that I'm much of an expert, but I'm at a complete loss as what's going on and how to fix it. Can someone help please?



Macbook Pro 2011 | 2.4 GHz Intel Core i5 | 8 GB Ram | OSX 10.9.5

 

[whoooop]

No one?

This problem gets worse by the hour. I just had it on my mag safe all day. charger went green as I headed out for a few hours. Just got back to a warning window saying the computer quit unexpectedly (kernel problems) and the battery charge is at 15% although plugged in the entire time. How is this possible?!

 

[BrianBaughn]

No one?

This problem gets worse by the hour. I just had it on my mag safe all day. charger went green as I headed out for a few hours. Just got back to a warning window saying the computer quit unexpectedly (kernel problems) and the battery charge is at 15% although plugged in the entire time. How is this possible?!

This is a new one on me. My first question is how was the downgrade performed?

 

[Ma2k5]

Looking at those processes:

- disnoted is using a high CPU%, this is a process for syncing MacBook to Iphone/Ipods etc. Could the down grade somehow got your computer into some buggy loop of trying to sync/update with the iPhone?
- FontD/FontWorker are also using a lot of CPU%. Could the upgrade/downgrade cycle added/removed fonts and now its stuck in some buggy loop trying to reconcile them?

Perhaps the best option is to completely reformat the computer and then do a Time machine backup?

Also perhaps un-sync and re-sync your phones/ipads etc from scratch?

 

[whoooop]

Thanks for your input.
I did do a clean reinstall to solve the problem after all. That helped.
Now I am back on Sierra which comes with its own set of problems. But that is for another post...