windows explorer error code

I am helping a friend get their laptop back up after removing a virus. I had to delete the explorer file that did not have an extension as described in another post. This worked. but now when windows boots, I get an error code that says THE PATH ‘ -GO -C28 -W ‘ DOES NOT EXIST OR IS NOT A DIRECTORY. When I cancel this box everything seems to work right. Do I have a problem? How do I get fix this error code?
Thanks in advance….