Hey guys,

I bought a mid 2012 MacBook Pro off TradeMe about a week ago. I bought it with full knowledge that the screen wasn't working, under the belief that it's just a screen issue.

• MacBook Pro arrived, worked fine (only used briefly) connected to my monitor.
• Booted up to OSX utilities, wiped the drive and then installed El Capitan successfully
• Next morning, everything works fine, download Sierra, begin installing Sierra, then after a while there's a white screen
• After a while I turn off the computer as its unresponsive
• Turn it on again and I'm greeted by 2 beeps (different tones)
• Did some googling and found it's an incompatible RAM problem
• Reseat the RAM - no luck
• Try various arrangements of RAM - no luck
• Call Applecare, go through all the trouble shooting steps with no luck
• It now has the two beeps followed by the apple startup noise, this will keep repeating every 10 seconds or so until I shutdown the computer
• Applecare suggests it is most likely something to do with the RAM, and suggest I take it to an authorised repairer.

Any suggestions? I think my next step is to buy some other RAM modules and see if that makes a difference. Could it be a greater problem? I don't actually know what caused the screen to stop working in the first place, there is a dent though.

Any help would be much appreciated.