How to resolve the issue when ip getting is 169.254.X.X and can not access internet

First of all please understand one thing that 169.254.X.X is not a valid ip address.
It is known as APIPA , that is the IP address automatically generated by the OS when there is not contact to a DHCP server. So it is a OS (self) generated IP address which has no connection or coordination with any other networking componenets, so that we can not communicate to any other networking devices using this IP address. That is the reason why we are not online with APIPA.
How to recover from 169.254.X.X ip
Follow one by one until resolves
1. Fist try to release and renew the ip address from command prompt.
ipconfig/ release
ipconfig/renew
2. Assign static ip in your computer in the range of your DHCP server.
3. Try to ping the default gateway
If getting replies try to go online if not please follow the instructions
* Check firewall settings turn off all firewalls including windows firewall
* Check the configuration of all Internet security softwares
4. Power cycle the network.
* Power off the DHCP server ( router or modem whatever)
* Restart the pc
*Wait at least 30 sec and power on the DHCP server wait until all lights are steady
5. Now check your IP address It will be your static IP
Ping the default gateway. If replies try to go online
If still problem Please try the following dos prompt commands
ipconfig /flushdns
netsh int ip reset c:\tcp.txt
netsh winsock reset