Let me give you a general approach on this issue since we do not know the brand of SSD you own.
It will not be possible to enable Intel® Smart Response Technology with the capacity the SSD is showing up right now. I suggest you take a look into the BIOS or Disk Management (Computer Management, Control Panel) in Windows* for the correct capacity of the drive. If the capacity is not correct the drive will probably need replacement.
In case the capacity is correct but somehow the drive shows a partition of 1GB I suggest you to delete the partition (using Disk Management) and leave the entire drive as unallocated space. Then, try again to enable acceleration.
If by any chance this last step is still not possible, I recommend you to run a low level format (secure erase) on the drive, run the diagnostic tool provided by the drive manufacturer, or to contact the system manufacturer (OEM) if the drive was sold with the computer.