Following a Windows update, I found that my printer will not respond. This is a 9015 Officejet all in one. I followed the procedure for uninstalling the update and the printer still does not respond. I have tried reinstalling using HP Smart and it will not recognize the printer. I have been through a number of wizards and all of them end with unable to install. One such process wizard ended with a notice that it was unable to connect successfully over the USB cable. The explanation: Operating system files missing. The following operating system files are missing and are required to install your device. Please repair the files using your operating system CD. C;\WINDOWS\inf\ntprint.inf
I am not sure how to do this. Or, does anyone have any help?
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