Hello techani,
There is less chances to get back your data after restore your system but you should try at least as may be the space on drive could not over-written, you should simply try a good data recovery software like Kernel for XP partition recovery software in which you can preview the data of your hdd drive in scanning mode and the deleted, missed formatted data will be show there in red color, if you find your data in scanning then you can easily save the lost data to any desired location but a necessary condition is only that the hdd space has not over-written. You can check the demo version for the working of the software and the data is available or not?