The "Mapped Network Drive" feature in Windows enables users to automatically connect to a network share and have the share appear as a local drive. However, there are configuration options that need to be specified if you if you wish to have a "Mapped Network Drive" reconnect when the computer reboots. Changing the configuration of a "Mapped Network Drive" so that it reconnects at login can be completed in a few minutes.
Click the "Globe" button, and then click the "Computer" icon. The "Computer" window will appear.
Right-click on the mapped drive, and click "Disconnect" in the menu that appears.
Click the "Map network drive" icon, and the "Map Network Drive" window will appear.
Click the "Drive" drop-down box, and select a drive letter for the mapped network drive. Then type the address to the network share you wish to configure as a mapped drive in the "Folder" box.
Click the "Reconnect at logon" check box (very important). Click "Finish" to complete the mapped network drive configuration.
Click the "Globe" start button, and then click the "Search" box and type "secpol.msc" in the "Search" box and press the "Enter" key. The "Local Security Policy" window will appear.
Click "Local Policies," then click "Security Options," and then double-click on the "Network security: LAN manager authentication level" item from the list in the right pane.
Select the "Send LM & NTLM responses" in the drop-down box, and then click "OK." The mapped network drive should now stay connected.