I have read around that replacing the HDD does not void the warranty as long as long as I dont muck up the laptop. Now about 4-5 months ago I replaced my 160GB 5200 rpm drive with a 200GB 7200 rpm one and everything has been fine but I need to call in apple care for the battery (it only lasts about 15 min after using it 'lightly' for a year) and keyboard issues (the backlight wont turn on sometimes or will randomly turn itself on and off, and some keys dont work anymore). The battery thing is an old issue iv been lazy to call it in cuz I dont need to run on it to often, however I NEED a working keyboard. Now to the question lol, If I send it in for repair do I run the chance of them replacing the HDD with the original modal or can I tell them to LEAVE the HDD alone? (and the ram too as I upgraded it to 4GB and no longer have the original pair). sorry question came out a little long winded EDIT: I also have one of those macstyles decal things too, they shouldn't care about that right?