Solution:

DHCP issue : 1. Event Viewer always show Services server error. 2. Files can not be sharing. 3. Can not use DHCP client function. You can use below steps to solve this issue : 1. click " start \ Settings \ Control Panel " , then double click " Network " icon. Select " Adapters " and click Add. 2. choose " MS Loopback Adaper " and click " OK ". 3. Restart the computer. 4. install Service Pack 5 or 6 5. install the correct the Network driver 6. Remove the " MS Loopback " 7. Restart the computer.