Hi, I've been encountering some issues with my macbook white recently. my gf bought the thing for me 2nd hand last year in Sg. when i got it from her, everything seemed to be working. couple of weeks ago, i tried playing some audio cd's on it and it won't play them. it just does this humming sound and ejects it a few seconds later. tried it multiple times but same result. also, just last night, i drained my mac battery. then i tried charging it to full charge. i left it plugged in through the night. when i woke up, instead of finding it fully charged, it was almost drained again. after checking, i found that the battery adapter was not lit up like it's supposed to. i had my engineer friend take a look at the adapter and he says its working fine. my mac is not under warranty anymore. been thinking of having it checked but wanted to get your thoughts on it first. also, my friend wants to try opening up the adapter for a closer look but i said i'd ask around first. what do you guys think i should do? thanks for your respones.