So I installed an SSD in my Mac several months ago, no issues. Then all of a sudden a few weeks ago it wouldn't boot into the SSD, it started booting to the old HD that I had swapped out for the CD drive. I did some troubleshooting and externally the SSD works fine. I put the CD drive back in and just the SSD and I get the flashing folder at boot up. Searching around I found that it is likely the cable for the hard drive. So my question is if anyone else has had problems like this and has found that replacing the hard drive cable fixes it? I'm planning on buying the cable from ifixit.com but wanted some feedback before I do it. Has anyone else had this problem and the cable didn't fix it? I.E. It was actually the main motherboard that needed to be replaced? Thanks for any help.