MacBook – Does a Corsair CMSO8GX3M1C1600C11 RAM works on a MBP mid 2012

3 beeps indicate that the RAM didn't pass the system test. As the 2x4GB Corsair RAM also gives you a Blue Screen Of Death on your HP I would say that the RAM is faulty and your only option is to return it.

Try shipping it to a friend in the US or to Amazon.com directly as you're not in the US anymore.

As long as you can confirm the laptop is indeed from mid-2012 (later models have the memory soldered in), then these specs should work for you with either a 13" or 15" laptop (Apple started soldering memory in 17" laptops after 2011):

• 204-pin
• PC3-12800 DDr3 1600 MHz type RAM

(Found at http://support.apple.com/kb/HT1270)

As far as hard drives go, I'd personally recommend a Crucial SSD, but yes, any solid state drive will work.

Hope this helps!