Dear Forum, - my beloved Mac Book Pro, 2012, which I still intend to use some time on if I can just fix it's problem, is having a hard time. Some years back I've changed the harddrive for a SSD drive and been real happy about the result, but now it suddenly shouts down without warning or after some flickering on the screen. See picture. At times, it repeatedly gives a 'beep' afterwards with no end until I shout it completely down. Any recommendations as to what to change in the mac book pro or do I have to see a specialist? Best wishes for the new years, and thanks for any help. Sven.