Many a time your files on the Hard Disk could get corrupt due to malfunctioning of your hard disk. The hard disk is partitioned and then divided into platters and sectors where your files are saved. Any of these sectors getting corrupt due to virus or by its usage will lead to erasure of your files partially by which you will lose your data.

To find out which part of  the memory of your computer is functioning well and which parts have become defunct, you first have to back up all your data by making a separate copy of it. The utility with which you can check the memory of your computer is called “Check Disk” in Windows. Check Disk will first carry out Integrity checks of your memory where the data in the sectors that may be bad will be over written. To run the check disk utility :

• Select “My Computer”.
• Right Click on the partition “C” or “D”.
• Click on “Properties”.
• Click on “Tools”
• Select “Error checking”
• Select “Check Now”.
• You will get three options which are “Check Disk Options”, “Automatically Fix File Errors”, “Scanning and Recovery of Bad Sectors”

The procedure for scanning and setting the memory right would have to be taken step by step and partition by partition. After which you can load all your data from back up on to the memory.