My new MacBook Pro is great ,fast no problems with anything, graphic are amazing. have two 2010 MacBook pros ,I was still using one ,other worked ,was backup . Anyway was listening to sirrus radio though it and it just stopped . Long story short I spent every minute I could trying to reinstall a OS for a week and a half with no luck ,so got the other one running , though I’d take the ram from mine (8 MB) and put in the other ,only had 4 MB .
good so far still a bit slow so I though I’d reinstall the OS ,here we go again ,couldn’t reinstall OS again ,I tried every thing ,I alway fix my and upgrade my computers . I couldn’t figure this out , so I brought it to a computer shop. That night I took the 4MB ram and put it in my computer and though one more time , it installed high sierra ,( I hadn’t put 2&2 together yet . Next day i go the the computer shop he got mountain lion from disc install , I asked him how he did it , he spent a bit of time but only charge me for half the time . He took out one of the memory chips and loaded the OS then put it back in ,he told me it wouldn‘t load with that memory chip in , I never would of thought to do that , I didn’t know you could take one out .
So now I have my new MacBook Pro , my 2 2010 Macbook pros running and now I can replace the keyboard on my 2015 MacBook Pro I spill a Black Russian on the keyboard ,major repair . I had just put a new battery in the 2015 MacBook then I spilled the drink which kill the battery and track pad ,I replaced ,but the keys are a bit sticky still