Disconnect the HDD, set the optical or USB as primary boot device in BIOS and set the SSD as the secondary device.
Reinstall Windows to the SSD (which you should have done in the first place). Once that's done add the HDD, mount it and format it.
Alternatively, if you have enough space on the SSD to house the HDD contents, clone the HDD to the SSD.
However, I suspect some kind of issue with the hard drive if this is happening.