Dell inspiron n5010 balck screen 3 beeps

Hi , i have a 5 y.o Dell inspiron N5010 core i3 3gb Ram. A few months earlier the laptop started displaying this problem. If however after waiting for a few days an attempt was made the laptop did start up. Recently i had the motherboard replaced & it worked fine for 2 days, however today the same problem reoccurred. Waited for a few moments and drained possible flea power and the laptop did start up again.3 beeps continuously with black screen,

Will this problem persist ?I had chipset, ram checked and motherboard replaced but i feel as if the next time i start my laptop it'll show the same problem. My laptop warranty is void. i'd be grateful for any solutions.