iMac Freezes once a week
My 2015 iMac 27-inch is by far the best computer I have ever owned! Love it. Starting a few months ago, it appears that every 7 days it locks up/freezes and I need to reboot. I do that and all is fine.
What is the best way to fix this? Clearly there is something on the iMac that it doesnt like. Can I run anything to clean the hard disk? I run Bitdefender AV to combat viruses.
I want to avoid having to back up all and erase/reformat drive. Having to install all my programs, files etc.... no one wants to do that. :) But, its been 7 years so I may need to.
Thanks!