HP 3755 all in one has stopped printing. When I go to settings, it says the driver is not available.
Have you tried to install the Printer drivers for your printer, if not then this link will guide you to install the full feature software and drivers for your printer HP Deskjet 3755 all in one Printer.
https://support.hp.com/us-en/drivers/selfservice/hp-deskjet-3700-all-in-one-printer-series/8954253/model/11262035
If you are still facing with the same issue after installing the drivers, on the same HP page where you have downloaded the driver for your printer, scroll down the list and under the Utility-Diagnostic Tools, install and run the HP Print and Scan Doctor for Windows, this may fix your printer issue.