Weird SSD Issue

Ok I'm experiencing a weird issue with my SSD. I have a A-Data s596 64GB drive installed on an Asus P5Q-E motherboard. The drive works great for the most part except sometimes when I turn the system off and the next time I need to use it the drive mysteriously goes missing from the BIOS. So, I power it down and unplug the SATA cable and pug it back in and it works. I've even tried it on a different SATA port with the same results. What is really weird is that I have another SATA HDD and DVD drive on the same controller and never have an issue. I'm wondering if the SSD is defective, I hope it's not because 1. they're expensive and 2. I would to wipe the drive and RMA it. Which leaves me with a huge pain in the a$$ of having to backup my storage drive and install Windows 7 on it until I get the drive back. I haven't even had the SSD for a month yet and I am experiencing this problem.