Win 7 64 Bit Network Printing

Hoping some of the experts here can help me solve the problem I am having.

Apologies if this has already been answered but I have searched on the forum here and my problem is slightly different in that all computers are using the same OS. The other posts seem to be for networking printing between Vista and Win 7.

My set-up is that I have a desktop PC (Dell XPS 9100) with Win 7 Home 64BIt OS which has a USB printer attached to it (HP Deskjet F4480). It works fine when printing anything from the desktop.  However I want to have two laptops (XPS M1530) both with Win 7 Home 64 BIT OS to print to teh same printer.

The laptops are connected through a wireless network.

Both laptops used to print fine until last week when I reformatted and reinstalled OS on the desktop PC.

After reformatting I installed the printer on the desktop PC and is working fine. In addition I removed the printer from teh two laptops and re added teh printer using the 'Add Printer' function. I had no problem adding the printer.  I searched for 'Network Printer' and it showed up. When I added it the drivers were also installed and it shows up in the two laptop's Control Panel as default printer.

I have made sure printer sharing is on in all computers.

When I try and print anything from any of the laptops it shows as if it has been sent to the printer. However nothing prints.

When I submit a print, the "whats printing" window shows the document but it says Spooling. It stays there for a few minutes and disappears. No error messages are given.

I have also stopped and restarted the spooling service.

All computers have unique names and are all on the same network/homegroup. Printer sharing is turned on.

It has to be noted that everything was working fine with the same set-up before I reformatted. Must be some setting I have not done correctly.

Any help is greatly appreciated and apologies if this has already been answered.