If you try to map a network drive in Windows 7, you may have experience that it wont connect to it upon reboot of your system, even if you check "save credentials".
I've google the solution for this problem but you may dig a lot of web sites to find it so ill lay it out here for someone who may need it.
Start -> Control Panel -> User Accounts & Family Settings -> Credential Manager
You may see under Windows Credential you current mapped account credentials.
Click "Add a Windows Credentials" and enter your network account AGAIN. This will override your current credentials. That should fix the problem and should connect after reboot now.
The problem is with the persistence of you connection. You may notice under you credential's persistence that it may be set to "per session". It has to be set to "enterprise" and the solution above should fix that!