The search results were a minefield. He skipped past the ads—shady-looking links promising "Instant Driver Fixes!" with exclamation points that screamed malware. He scrolled until he found the official Canon support URL. He clicked it.
"F16640" is a regulatory model number found on the sticker. For the correct driver, use these commercial equivalents:
The User Account Control prompt appeared, dimming the screen. Do you want to allow this app to make changes to your device?