My Dell printer worked perfectly with 64 bit Vista and then I upgraded to Win 7 and my printer doesn't work. I have checked the driver and it is current (Vista) and I have plugged other printers into the PC and they work. It is not showing up in Device manager. I have tried to troubleshoot without any luck. When I go to print the job goes to the print queue then I get an error that says "error - printing document". Any ideas?