My computer crashed

Recently my computer was working slowly. I was so tensed that I needed to use it daily. I has some important data and files stored in it. So due to time constraint I was unable to format and setup new operating system. I was using the same slow computer. But recently my computer crashed all of a sudden. I was searching for some important information regarding my career. I lost all my data stored in my computer. I wish I hadn't been so lazy to backup all my data so that I won't have to regret.

I am now searching for software which can recover my lost data. I hope to find soon the data recovery software to use with my computer so that I can retrieve the important data and files. As always I am seeking cheap and best solution as I am not in a position to pay a high price for a data recovery software. Internet is too big too search for data recovery software, there are too many choices and I get confused which one too choose. Probably I will have to seek some of my expert friend's advice. They are all busy but hoping they would provide me some kind of solution regarding how to recover my lost data.