I just got a Crucial SSD to put in my 2011 Dell XPS 8300
However having plugged it all in, the new drive isn't seen by either the BIOS or the OS. I've tried SATA ports 0 through 3, i've used different cables, i've tried it on its own , i've upgraded the BIOS (to A06) and even reset the CMOS, but no use, its never seen
Try plugging the drive in while you have the computer booted into Windows and see if it picks it up there. The drive could be "frozen" or however they term it - I had this issue with a Samsung 840 Pro that I bought. I had to use a third party program to unfreeze the drive so that Windows could see it. However, I was able to see the drive in the BIOS with this issue.
Try plugging the drive into a different computer if possible as well.