How to salvage data from bad Hard Drive

I tried to use my old SATA HD as a second drive for my new HP Pavillion PC. After connecting the SATA HD I cannot boot my PC I hear this whirring sound then it goes to the usual choice of booting normal or safemode. I Tried both ways & it will just cycle. No boot. No problem booting if I disconnect tho old drive. When I entered SETUP, my bios would not recognize it. My SATA are all enabled. What can I do to have my PC recognize my old drive so I can transfer my old data.

Ed