Problem with MS-DOS

[Clifford]

I have a computer running Windows 98 But Windows will not load because MS-DOS asks for a certain floppy disk to be inserted in the A drive.
I have the disk and the programwill run okay but when I end the program Windows will not load.
Can anyone help me with this?

Thanks Clifford

 

[Tedster]

your boot sector is either corrupted or you have an autorun or batch program that is looking for a DOS based program upon bootup.

 

[Clifford]

Thank you for replying. I surmised that was the problem.
Now how can I fix it?