Beep Beep Beep

I try to solved the beep Beep beep 5 times problem on my dell Inspiron 15 3000 using a post on dell.com community but it still do beep 5 times while using it (If you still receive 3 Beeps on the system then itindicates System board failure.. You will have to replace it on the laptop.) So what is the solution now ?