Go into Disk Management and see if you can allocate the space
I have went to that. It shows up in the bottom half but wont show up in the top part. When i right click the long bar i get the options to new simple volum, new spanned volume, new striped volume
Might totally be off and you tried it, but in disk management I had to format it my new HD before it would recognize it...but it wasn't an SSD, just a normal HD.....love the Grumpy cat by the way, like an angry cat giving advice.