Funny poping like noise in comp.

[swker98]

HI,

Latly ive been getting a wired poping noise almost like the sizzling of soda, it gets lounder and lower

im suspecting a fan, it seams to be the gpu fan
maybe its something rattleing around, ill take a look tommrow
but in the mean time if anyone has any suggestions feal free to post em'

thanks in advance

 

[Nodsu]

Open up the computer and listen carefully where exactly the noise comes from?