I had a Seagate Baracuda 1TB 7200.11 HDD which one day wouldn't be recognised on BIOS or load windows at all. I found out that these drives have this firmware bug and after doing a quick search I found this complete FW-FXR kit on youtube
which repaired my drive in less than 30 minutes. I also repaired a couple of friends drives with it and even got a small profit out of it Yes there are cheaper solutions like what is mentioned here but I found it safer for my data to spend 25Euro for this kit (which also include click by click repair software) than to buy random adapters and try to decode messages.... I bought mine from Amazon but it is also avaliable on ebay.