Make sure network discovery and printer sharing are on by following these steps:
Open Network and Sharing Center by clicking the Start button , clicking Control Panel, clicking Network and Internet, and then clicking Network and Sharing Center.
Finally, share the file or printer by doing one of the following:
Right-click the file or folder you want to share, click Share, click the arrow, select the people you want to share with, and then click Share. For more information, see Share files with someone.
To share a printer, see Share a printer.
If you're still having trouble sharing files or a printer on a network, make sure Windows Firewall is not blocking
File and Printer Sharing. Here's how:
Open Windows Firewall by clicking the Start button , clicking Control Panel, clicking Security, and then clicking Windows Firewall.
Click Allow a program through Windows Firewall.
If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
In the Program or port list, make sure the File and Printer Sharing check box is selected, and then click OK.