QUESTION My Canon Pixma iP1900 printer has recently stopped working with my Windows XP computer. I've tried reinstalling the drivers and unplugging and reconnecting the printer. I now get a message at startup reporting that Windows has found new hardware but was unable to install it. Keelan Hawksby
lHELPROOM ANSWER Looking at the screenshot you provided, it appears that Windows has misidentified your printer, referring to it as a Posiflex PP-7000IIUSB Thermal Printer. You can get around this by installing new drivers before plugging in the printer.
Download the latest Windows XP drivers for your printer from Canon's support site. Unplug the printer and uninstall the existing Canon drivers from Control Panel, Add/Remove Programs. Reboot, then install the new drivers. Unless prompted to do so by the driver software, do not reconnect the printer until after you have rebooted the PC.