Asus Warranty

[Desertbloom]

I want to buy a Asus F3JP, but all suppliers have different warranties. Some of them are Asus warranty and some of them are their own warranty due to different Memory, Hard Drive, or O.S.

I would like to know:

If I upgrade the Memory, Warranty?

If I upgrade the Hard Drive, Warranty?

If I upgrade the O.S., Warranty?

Thank you.