Internal drives not recognized - NOT the hard drive cable
Hi - I'm having this problem. I have an A1278 mid-2009 MacBook Pro, 13", 2.26 GHz. It's definitely not the drive (have tried 2 that I know function and 1 that was brand new). I replaced the hard drive cable twice (first was just the cable, seconds was the cable with the bracket so I know the cable is connected; it's the side cable and it had adhesive). I also reset the PRAM and SMC The llaptop does boot if I use the drives I mention before externally. As soon as I connect them internally, I get a flashing question mark folder. It doesn't boot in single user, verbose, or safe mode. When booting from the install disc or repair mode, the only drive recognized is the optical drive.
I added tape where indicated in the answers/comments (on the data side of the connector). It's not occluding the connection or any pins. I still get a flashing question mark folder. What's my next step?
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