So the driver tries to talk to the hardware. The hardware answers back in XP-era slang. Windows 11, standing guard with its digital bouncers, says: "I don't understand this language. Access denied." Over the last decade, a secret society of IT technicians and home archivists has kept the M1120's scanner alive through a bizarre, three-step ritual. If you want to bring yours back from the dead, here is the forbidden knowledge:
Open Device Manager. Find the unknown "Imaging Device." Right-click → Update driver → Browse my computer → Let me pick. Scroll down to "Hewlett-Packard," select "HP ScanJet G3010," ignore the "this driver might not be compatible" warning, and install it. hp m1120 scanner driver
Remove any "HP M1120" entries from "Printers & Scanners." Do not use the "Full Solution" installer. It lies. So the driver tries to talk to the hardware
Why? Because HP, in its infinite wisdom, decided that the M1120 doesn't speak the modern scanner language. It uses a proprietary protocol called —a dialect that Windows 10 and 11 have largely forgotten. The Two-Faced Driver Here’s the interesting part: The M1120 is actually two devices in one body. It has a printer controller (which uses the standard "Host-Based" driver) and a separate scanner controller (which requires the specific HP ScanJet G3010 driver family). Access denied