Issues making backup of 800GB Intel 1.8" SSD

Hi folks-

I'm trying to make a backup of a Windows 7 install on a 800 GB Intel 1.8" SSD. The Acronis TIH 2014 version is 6673. I'm removing the drive from the system, and plugging the SSD into another machine that I store all my images on. I boot Acronis TIH 2014 from CD on this "imaging" machine. When trying to boot with the 800GB SSD plugged into the "imaging" machine, the system hangs at BIOS for roughly 5 minutes, then it loads Acronis which takes about 10 minutes. The SSD is not found when I try to make a backup from the main Acronis screen. I've checked for the drive in the management tools, but it isn't displayed anywhere in Acronis.

I have used this same setup to successfully clone 240GB Intel 1.8" SSDs previously. The issue seems to only be with the 800GB drive or possibly with the way I installed Windows 7? However, windows is running fine on the SSD if I boot to it on the machine that it was made for. Does anyone have any suggestions as to how to get this working? Thanks in advance.