If you have persistent issues, a clean reinstall is the nuclear option.
: Click Start Setup on the screen and follow the on-screen instructions.
Once you have downloaded the driver, follow these steps to install it:
This is the most overlooked step. Downloading the wrong architecture driver is the #1 reason for installation failure.
This is more convenient but slightly more technical.
Many users download the printer driver but forget the scanner driver. The G3110 is a (print & scan). The MP Driver includes basic scan, but for advanced features (PDF, resolution control, OCR), you need Canon's IJ Scan Utility .