I believe what happened is the original HD had the MBR stored on it along with being set as active. Only one drive may be set as active. So when you wiped the HD you also wiped the MBR which contained the directory of the new OS on the SSD. As others have said, you will need to install on the SSD which will write out a new MBR. Also the SSD will have to be set to active.
I agree, all is not lost however as you can repair this from the command prompt with the Windows 7 install disk.
It was a nightmare but it turned out part of the system had been stored on my 3TB hdd.
After booting to a USB-stored OS and forcing a wipe on the 3TB as well as a new format as NTFS primary (non-active) and THEN booting to recovery disk and performing SFC /scannow as well as a couple repair startups I finally managed to get everything i needed back on the SSD and boot successfully. No data lost.
Man what a pain though.......you would think that win7 would install to the drive I specify and NO WHERE ELSE -_-.