Sometimes Windows 7 will not connect to your network drive even after providing the correct credentials. So I will provide you solution for this issue.
Steps (4 total)
1. Goto Run –> gpedit.msc
2. Open the Local Security Policy
3. Select the Security Option under Local Policies
4. Choose “Send LM & NTLM responses“in Network security: LAN manager authentication level
By Default there will not be any option in the box