Hi,
I own a Dell Inspiron 7520 15R SE and have been using it for a couple of years now. Recently, it started making 4 beeps when I turned it on and upon replacing the RAM stick into the second slot, it works fine... I have tried multiple things like cleaning, trying a new memory module but one memory slot is faulty... Any idea if it can be repaired or will I have to replace the entire motherboard ? And what would be the estimated cost ?