Asus Eeepc 1215n beeping, Overheating?

Hi there!

My problem:
Randomly my eeepc makes a loud robot like beep. It happens 2-3 times per hour and it sounds very similar to the boot up beep some computers make. As of now it has only happened when the computer is awake.

More info:
- I purchased my netbook 1 week ago and this problem started earlier today.
- I had left it turned on for most of the week however it was in sleep mode for about 90% of it.
- 3 days ago I upgraded the ram to 4gb. Everything else is stock.
- I've only used it for firefox and evernote. No games or anything else that would be considered graphic/processor intensive.
- I felt the side and bottom, it feels warm but not overly hot.
- It is plugged in and fully charged.
- I always have it on a table or other flat surface.
- I do not use a cooling pad with it.

Do you think that maybe it is overheating or the motherboard is malfunctioning?

Since it is only a week old I am thinking about exchanging it. I'd rather not if I don't absolutely have to though.

Any suggestions/advice would be great!  

Thank you!!!!!