HP Laserjet P1102w by USB "The disk you inserted is not readable by this computer"
My HP Laserjet P1102w used to work fine with OS X10.10. Then it started saying "The disk you inserted is not readable by this computer" whenever I switched it on, but the printer still worked. This morning it didn't. I uninstalled the printer, but can't re-install it - it isn't listed when I click "+". I have tried a different USB cable, and a different USB port - same message. The HP website does not provide a downloadable driver, as far as I can see. What do I do? (The wireless connection to the printer stopped working ages ago. The printer still works with our two PCs via USB.)
iMac, OS X Yosemite (10.10)