Master boot Record Error

Hi friends,
I am facing I am facing an issue with my Computer. Whenever I am starting my windows I am getting an error message as “Master Boot Record Error”. I am facing this issue from last few days.
After searching on the net I found a solution where I need to boot through Floppy and need to do a "fixmbr" command.
For that I bought an external USB Floppy Drive today and made a MS-DOS boot disk from my sister's computer, but the fixmbr command comes out unsuccessful when I tried it-- all it says is "Bad command or file name" in the DOS command prompt.
Can anyone help me out with this issue? I would really appreciate the person.

Sure i will Help you with that may i know which operating System are you Using.

I am using Windows Xp as my operating System.

You need to follow few Steps:-

1. Enter Windows XP Recovery Console.
   
2. When you reach the command prompt, type fixmbrand then press Enter.
   
3. The fixmbr utility will write a master boot record to the hard drive that you're currently using to boot into Windows XP. This will also repair any corruption or damage that the master boot record may have.
   
4. Take out the Windows XP CD, type exit and then press Enter to restart your PC.
   
5. Windows XP should now start normally.