HELP! HDD not working right, don't know what too do

Ok I'm kind of a tech noob so  please bear with me.  I just completed my first build (http://pcpartpicker.com/user/slayed1234/saved/qywj4D).  It worked perfectly for a few days until I crashed it and did a hard reboot.  After doing so I noticed that my hard drive which had previously read "994gb remaining" now reads "98gb remaining"  In the BIOS it still comes up as a 1000gb WD drive.

It's a western digital Blue 1TB.

 

Please Help I don't know what too do.  I tried googling the problem but all the tools people recommend refuse to work on windows 8.1.  I tried reformatting the drive (too no avail), checking too see if there was any un-partitioned data (there isn't), and also tried using WD's support portal (it's a nightmare).

 

Any help would be greatly appreciated thank you!

I assume your operating system is on your 120GB SSD?

Go to "disk management" and look for your 1TB WD Blue.  Try deleting the volume and then reassigning it a new letter.

OK i fixed it I accidental gave myself a 100gb storage pool when I installed the drive and changed it in the control panel.

sorry for wasting your time