I have hooked up my HP 4280 to scan and it continues to tell me the the USB cable is not hooked up. I have rechecked the cable and attempted this on 2 of my laptops. The USB must be attached as I am able to print.
PLEASE Help
Trudy
My problem is virtually identical. After several reboots and re-installs of the software, the scanner works only intermittently and with great delay. Printer says "USB not connected".