HI, I am using a Dell Inspiron N5110 laptop. Recently I opened up my laptop to clean it's heat sync by following a tutorial step by step. Since i have reassembled it, the signal strength of WIFI is close to 1bar or two even though its kept close to it. Previously is wasn't the case even if I was on a different floor. Other devices like mobile phones are showing full signal strength as always. The connection also dropps off many a times and reconnects again. What could be wrong? The issue could also be unrelated to my opening up the system.