I recently moved my computer and I also uninstalled Microsoft.net (framework?) 3.0.
I'm not sure what's caused it but now, everytime I try to print:
I see that the printer is offline. When I put it online, then I get the error message. I follow the instructions and power off the printer. I disconnect and reattach the cable into the printer and do the same from the USB cable into the PC. I power the printer back on and the computer says "new hardware found HP Laserjet 1000".
When I try to print again, once again it says printer offline and I get the same error mesage as before. The error message keeps popping up on screen ever few seconds.
all the best