hello there i'm new here. got some q:

is it just my laptop or it is a normal problem that my fan making weird noise, like it's cracking or something. it's like roaring for a certain of time, then quiet for certain of time. this things happen continuously, even when i'm doing light task such as web surfing, browsing picture etc.

how can i solve this? send to the vaio center? it's kinda annoying especially when my surrounding is quiet, the fan sound just too obvious!

p/s : vgn-cs26g white