Data Recovery from crashed HDD

Hello,
I am using Windows 7 Professional.
I was copying file to my Pendrive from my laptop. Suddenly laptop was going OFF and restarted again, That was "NO OPERATING SYSTEM FOUND". This message was displyed.

After that I removed my HDD from laptop. Using SATA-USB cable i have attached it with my friends laptop, It was not displayed in my computer. But it is seen in
Compuer Disk Management as unallocated memory of 2048GB,(actually it is 160gb sata hdd). And its gives error like "cyclic redundancy error".?

So, What is wrong with my HDD .? and How to Recover all data from HDD.?
Help me.!