External HDD To SATA Fail

I had a new external HDD WD My Book Essential USB 3.0 (2TB) 6 month ago. All was good until two days ago. I rebooted my computer and I won't boot up. After disconnecting WD HDD it work perfectly But after I turned my PC off, and tried to turn it on, again it won't boot up with the HDD connected AND some weird ticking noise started in HDD itself. I sounds like it's trying to boot but failing and trying again. So I disconnected, boot up the system and then plugged it in. Nothing Not in explorer, not in disk management not in Acronis program, nothing.I rebooted and it showed and Local Disk R, but I can't even start disk management or open it with explorer, or even open any program to be able to see/fix it. In the end, HDD wasn't even turning on.So the next day I called tech support of WD. They told me standard stuff, like "Disconnect, Reconnect Try another port, etc ". Nothing. By warranty they can replace it, BUT I don't care about the drive itself, I need data. In this case they can't help me. All they told me is to contact special company for that, and it's gonna cost me up to 1000$.After that call, I noticed a burning smell from HDD. It was connected to power and USB. I disconnected and I opened the case of my HDD. SATA HDD itself seams to be fine, but the connection board (with USB and power) burned.So, I connected directly via SATA to my PC. And that's when the fun starts: BIOS did not recognized it. I switched the SATA port. BIOS showed the model and everything but it gives me "Ultra DMA Mode-5 S.M.A.R.T Capable but Command Failed." Reboot.In different software... NOTHING. Reboot again: and again "Ultra DMA Mode-5 S.M.A.R.T Capable but Command Failed". Reboot. S.M.A.R.T. Command Failed... Reboot 5 times, all good. Started LiveBoot CD by Wondershare. It found my HDD and UNKNOWN. Was trying to recover data from it, program freeze. Reboot again. Was trying to fix mbr with Win 7 Boot Cd, nothing cuz it can't see were to fix mbr. Reboot. Started HDAT2. Nothing. Reboot 10 times, and HDAT2 finally can see my HDD. Before I start any test I shows me read error from UNKNOWN DEVICE. Started "hdat2 most powerful test". Nothing. No errors was found. O_o. Also I try Read MBR with the same HDAT2. Everything 0/0/0/0. So what else I can possibly try?? Oh yeah, when I connected my HDD via SATA, that "boot or not to boot" sound was still there.