^ Unplug then Plug back in, or try a different sata Cable.
However, I think the master boot record is hosed.
What you need to do is run a program to delete ALL partitions on the drive, then using OCZs tool box do a secure erease. That should alow you to re-install windows.
Connect the SSD to a USB port, need a sata to USB cable, then retry Diskpart (use the "Clean" command - JUST make sure the SSD is the drive in focus).
If that does not work then Down load the Ultimate Boot disk iso and use one of the 3rd part disk programs.