No you hurt anything and you would need to switch it to AHCI before you install the OS anyway. So ye switch it in the BIOS and then install Windows and you will be fine.
what i meant was the only thing i have installed on my ssd is games. i just got the ssd today. everything else is installed on my computer, OS and all that. i'm just wondering if i can switch from ide to ahci safely. i don't intend to install my OS on it or anything but games.