My laptop won't connect to the internet, it says it can't find the IP address. What do I d

My brother-in-law came over and told me I could connect to my other computer through an internet connection, so we set one up and it didn't work. Now my internet won't connect, I can't update my virus protection or firewall, and I don't know what to do. I have tried different Ethernet cables, setting up different connections, and tried wireless, but it didn;t work because I knew my PSP's wifi max wouldn't count as a wireless adapter for my laptop. I don't know if any of this will help, but if someone knows what to do please help.

My laptop won't connect to the internet, it says it can't find the IP address. What do I do.?norton internet security 2008

type in the following:

start run: cmd

then type in: ipconfig

as long as the IP is NOT 169.254.X.X then you are ok. if it is, reboot your router and then computer.

If IP is ok: whatever the gateway is(last thing in the ipconfig results), is the IP of your router.

ping router-ip-address. reply? no: reboot router

yes, reconfigure router to accept DHCP settings.

My laptop won't connect to the internet, it says it can't find the IP address. What do I do.?spyware removal

Have you called your ISP?
You need to set your tcp/ip properties to automatic on the connection. Then connect it to your router or modem again. Re-start the machine and it should connect.
Clear your DNS and ARP cache. At a command prompt (Start-%26gt;Run: cmd)

arp -d *

ipconfig /flushdns

Then disable Windows firewall for a few minutes.

ipconfig /release

ipconfig /renew

Then you can re-enable the firewall when an IP is gained.
Go into My Network Places and run the Network Wizard. That should set things back up for you.

If not, please give more information. What are you using for your Internet connection, cable, dsl, etc? Do you have a router? Do you have a hard coded IP address set?