Hi all,
I posted this question on Research and Development by mistake.My bad . I have an ASUS laptop with following specs:
Intel® HM87 Express Chipset
DDR3L 1600 MHz SDRAM, 12 G
Graphic NVIDIA® GeForce® GTX 765M 2GB GDDR5 VRAM
Storage 2.5" 9.5mm SATA 1TB HDD 5400 RPM

I recently tried to reinstall windows 8.1 and that it didn't end well. After 4 or 5 attempts, the installer no longer detects the presence of any partition. Not only did I loose all the data, a technician(though not an expert I believe) says that the hdd is dead. Is there a way to know if the hdd is irrecoverable? I wish there is way to get my data back even though the hdd was formatted
Thanks in advance.

is there any noise, clicking, unusual sound from the HDD ?
if it's sound normal (remember, only it's sound normal), you can check what DMDE has to say about it

I hear a mild sound but not sure if its the fan or the hdd. Btw, for using dmde, do I install dmde on a working pc and connect the faulty hdd to it using a sata to usb cable?