Replacing hdd in HP Envy Sleekbook with SSD - not seeing drive

Hey all, So I bought an HP Envy Sleekbook (the pre-made one, not CTO) and it came with a 500gb hdd and 32gb ssd for intel rapid storage. I could have ordered the CTO one with a main SSD already in there but it would take longer to ship and I couldn't wait. Anyway, I took the hdd out and replaced it with the ssd and booted windows 7 from usb. Didn't recognize the drive. It first booted me into the rapid storage raid setup but I just left it how it was. Then I tried taking out the 32gb ssd and having just my main ssd connected and booting into windows installation. Still not showing up as a drive I can install too. Is there a driver I need or something?