Get message C:\file not found C:\?

I downloaded an antivirus. After I realized that it was not working properly probably because my pc is old. I uninstalled it and deleted files also by hand.Now during boot after the Win98 screen shows the first time I get this message on a black screen: C:\ file not found C:\. How can I get rid of it?

Get message C:\file not found C:\?
CLICK START


CLICK RUN


WRITE MSCONFIG


CLICK OK


THE SYSTEM CONFIGURATION UTILITY WINDOW WILL OPEN


SELECT START UP


REMOVE THE SIGN IN FRONT OF YOUR ANTIVIRUS


THEN CLICK OK


THEN RESTART
Reply:i think you need to format your C %26amp; install new windows


or i perfer to therow your computer from your window lol
Reply:do a refresh windows install


Do not format just refresh windows files


or put win 98 disk in drive , Run type sfc (press enter)


browse disk and extract file(s)
Reply:this problem arises when you delete the files by hand try to go to add remove program in control panel(i think win98 has that) and remove it from there, other than that u can try to restore your computer back couple of weeks before u deleted the anti virus