HelpWindows7.com

[kieran]

I have recently installed Windows 7. But it cleared all my data. Now I want to reinstall my previous OS i.e., WIN XP and want to restore my data. Can any body help please?

[baldwin]

You can use some data recovery softwares. Maybe they will be able to recover some data on your disk.
Stellar Phoenix Windows Data Recovery Software
http://www.stellarinfo.com/partition-recovery.htm
But if you re install win XP then it means that you are increasing the chances of recovery failure, as things will be more complicated and over written.

[felix]

Many of us depend on using PCs to store important information and there's nothing like the heart-sinking feeling when you switch on the PC to be greeted by an error message saying, 'no bootable partition,' meaning your hard drive has crashed. There can be a way you can recover that data, even the things that you thought you had removed on purpose.
This link may be useful for you:
http://helpwindows7.com/dir/Windows_7_Software/