HDD instand failure, without any strange behavior before.

Hello. I have a Samsung Barracuda 7200 rpm 1.5TB HDD. It was working very good, never had any problems with it. PC is protected by Norton 360. Severl days ago, I opened My Computer, and saw one of the 2 partitions on the disk missing. I restarted the PC and now both were invisible. In Bios it was also undetected. It was for storage and low-demand games. When I rebooted, there was a strange sound, like when a CD/DVD/BD-ROM is trying to load a disk. I tried everything, nothing worked. I never OCed anything, BIOS is set for Normal (not Turbo). The config is ASUS x79 Sabertooth MB, Intel Core i7-3820@3.6Ghz, 32GB DDR3 (8x4GB) 1866Mhz (X.M.P.) RAM, though it is up to, Corsair XMS3@2000Mhz, nVidia GTX 680, and now nVidia GTX TITAN Black Superclocked by EVGA, 1020W Chieftec PSU, the system is on SSD, and is Windows 7 Ultimate (I wait for Win 10, Win 8 is for tablets). It is Seagate Barracuda 7200.11. I always provided cold temp. I use air cooling (where I live, Moldova, nobody knows how to properly do watercooling). I watched it being installed, and I have enough knowledge for Win7, BIOS and hardware. What can it be? There was no excessive use (even AV scanned it rarely, and never found threts, as only music, films and games were there. It was bought in late 2009, you can say 2010. And it performed awesome all the time. Please help me revive the HDD, or at least recover the data. And give me some links pls (but amazon, which I know, and ebay, which doesn't support my country), of a shop with HDD and graphics card, high end ones. that has international delivery, I know the prices at Amazon. BTW there were no updates, installs and BIOS changes when it failed. I defragmented it at about once per 100-200GB of added data, it was always formatted. I played a game installed on totally another disk and when exited, saw that one prtition is not present. The rest is above. Feel free to ask anything, I use a PC since 8 y.o., for ~17 years, so I know the terms and stuff. Where I live, service centers have a habit to tell "it's all broken, buy new". Please help me recover the drive, or at least the data.
Thank you in advance.