First run Delete Print Jobs to remove any stuck print job in the queue.

Disconnect the printer.

Start, control panel, programs and features, your printer, uninstall.

Restart your computer. Make sure the printer is removed. Manual Printer Driver Removal

Download the Vista 32-bit drivers for Windows 7, 8 and 8.1 32-bit or the Vista 64-bit drivers for Windows 7, 8 and 8.1 64-bit. Install the Vista drivers in the Vista Compatibility mode You'll get a message, the printer is not connected. Connect the printer at this time(powered on).

Links to the patch/drivers can be found at...

Dell V515w Wireless All In One Printer - (RED) owners thread

Remember virus programs and firewalls will block communications. If you did not install any, then Windows Defender is the default. Try reading...

Allow Printer past Microsoft Essentials/Windows Defender

Rick