Long startups, three beeps, trackpad/keyboard freezes...

i have 2011 15" mbp , it's been having lot of problems.

4 months ago replaced ram -- 4gb 8gb. since i've been having bunch of problems, don't know if can attribute them memory change. bought highly rated ram stick newegg.

anyway, every once in while trackpad , keyboard unresponsive. if i'm watching youtube video or continue play, can't move cursor or type anything. basically, thing can hold power button until restarts.

restarting problem own. when restart restarts well, take exceptionally long time... long give , try again. other times beep 3 times continually until restart (sometimes couple of times) boot normally.

far thing i've tried taking out memory , putting in. have ideas wrong?

 

try original memory , see happens, if works fine after putting in ram, weird hardware issues having may mean else. if else fails try apple store , see say.

 

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