0.0.0.0
IPCONFIG /RELEASE
IPCONFIG /RENEW
Check Link Light - Off    Present Not Present
Check Device manager - RedX - right click enable - bang - NIC driver uninstall/reinstall. Reinstall NIC driver
Check the NIC cable with a diff computer for link light
  Present Not Present
Check Network connections - red X - right click - enable Replace NIC Card with L2 permission Refer to ISP
DHCP client service (services.msc) | Startup_Type - Automatic | Service_Status - Started
System Restore
Reinstall NIC driver
Replace NIC Card with L2 permission