Macbook pro keeps completely freezing
I have an early 2015 Macbook Pro.
For several weeks now it has taken to completely freezing approximately once a day; sometimes it'll go a couple of days without doing it, other days it will do it 3 times in 24 hours. It happens when I'm simply browsing the internet or working in a word document, nothing exciting. Everything will suddenly stop - I am unable to use the keypad, no emergency quit shortcuts will work and my only option is to hold down power off and reboot.
Any ideas? I'm worried that if I take it for someone professional to look at they won't be able to do anything because I can't reproduce the freezing on command.
MacBook Pro (Retina, 13-inch,Early 2015)