Slow boot time on mac osx el capitan
I am running El Capitan on a mid-2012 MB Pro with 4 GB RAM. The OS runs perfectly once booted, very fast and no issues. But, the boot time has gone from about 5 seconds to sometimes almost 2 minutes. I checked Activity Monitor after boot time and using about 2.3GB out of 4GB. I have tried the following based on everything I have researched:
1. Reset the PRAM
2. Set the startup disk properly
3. Ensured nothing is set up to load at startup
4. Disabled Spotlight (due to concerns about indexing)
5. Reset the mail logs
Nothing has worked to improve boot time. I really don't wont to reinstall everything. There has to be a solution here.
MacBook Pro, OS X El Capitan (10.11.1)