Screw the Security

CHKDSK (short for "check disk") is a command on computers running DOS, OS/2 and Microsoft Windows operating systems that displays the file system integrity status of hard disks and floppy disk and can fix logical file system errors. It is similar to the fsck command in Unix.
The command is implemented as an executable program file, CHKDSK.EXE. Different operating systems all use the same filename, but the files are not necessarily compatible between operating systems.
On computers running NT-based versions of Windows, CHKDSK can also check the disk surface for physical errors or bad sectors, a task previously done by SCANDISK. This version of CHKDSK can also handle some physical errors and recover data that is still readable.

Short Way:
1.) The second most easiest way is to click Start > My Computer > Choose your desired drive C: or D:.
2.) Right click the disk to be checked that can be C:.
3.) Then, click Properties > Tools > Check Now tab.

Long Method:
1.) Click Start > Run / Windows + R
2.) Type ''cmd" in the run box then ok.
3.) At the command prompt, type the drive letter of the drive you want to check (followed by a colon), and then press Enter.
4.) For example, to check drive D, type the following text: d:
6.) Change to the root directory of the drive by typing the following text and pressing Enter: cd\
7.) Type the following text, and then press Enter: chkdsk /<switch> where <switch> is one of the following:
8.) If you want to automatically repair file system errors, use the /f switch (for example, chkdsk /f).
9.) If you want to both repair file system errors and scan for and recover bad sectors, use the /r switch (for   example, chkdsk /r).
10.) If you do not specify a switch when running CHKDSK, any errors that are found will not be fixed.
11.) If you are prompted to schedule CHKDSK to run the next time the computer restarts (because CHKDSK may be unable to gain exclusive access to the drive under Windows), type the following text, and then press Enter: y
12.) At the command prompt, type the following text, and then press Enter: exit
13.) If you had to schedule the CHKDSK operation, then restart Windows NT/2000/XP.
14.) While Windows is loading, CHKDSK should automatically run and check the drive that you specified earlier.