You did not provide any info on the file.
But you can try System Restore back a few days when all is working.
http://www.microsoft.com/windowsxp/home/using/howto/gethelp/systemrestore.asp
yesterday i chat here in my pc and somebody had give me a file and when hgive me the file i can no longer i cannot open up the file in the floppy disk and also the scanner is affected, its not working. and i think some of the programs too is affected. i hope u could help, i dont know what am i gonna do. i hope u will help me.

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