The documents do not show up on the print window

I am shifting from “Windows Vista” to “Windows 7” recently. I am using a printer “HP Photosmart C6150” Initially It was working very well, but now I am facing a problem to get the print. I uninstall & install successfully the “latest HP Windows 7 64 bit software package” many times to fix this issue.
But the same problem of not printing and not even in the queue exists. When I attempted to use the “HP Printer diagnostic utility” it even doesn’t recognize the printer.
Please help me to resolve the problem.
