Everytime i connect to the internet windows gives me a warning that my computer has an ip conflict with another system on the network.

Can someone tell me what this is?This happens when two devices SOMEHOW wind up with the same IP address,

what you need to fix is:
1)enter IPCONFIG /RELEASE and IPCONFIG /RENEW from a command prompt and see what happens.
See if it fixes the problem. ok this gave me some addresses i suppose, the warning is still popping upRestart your this will force all systems to request new IP addresses.Josh,

you need to LOOK at two things:

*On your PC look at the Internet Protocol (TCP/IP) and check if the setting is Dynamic or Static. My guess is, it is set to Static, and therefor if another PC on the LAN has already a specific IP Address allocated (it may be Static or Dynamic) and you fire-up your PC in question (which has an Static IP Address and happend to be the same), then you will have conflicting Addresses. In any case change the TCP/IP of the PC in question to Dynamic.

*Check the Router for DHCP allocation. Check the IP Allocation Range, is the range big enough, it should be able to accommodate all PC's on the LAN.
Check if the DHCP is Dynamic or Static. It (really) should be Dynamic.
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My recommendation is:
SET YOUR LAN ENVIRONMENT TO DYNAMIC ALLOCATION.

1-set your PC to Dynamic allocation. Shut down this PC and (important) unplug ALL cables and and let it SIT for 20 minutes or so. Plug the cables back in. Restart.

2-Shut down the rest of PC's and unplug ALL cables. Set your Router to Dynamic DHCP allocation. Shut the Router down including the MODEM and unplug all cables. Let it sit for 20 minutes or so. This will CLEAR the ARP Stack and Allocated IP Addresses. (Do not reset to Factory Settings).

3-Plug in the Router and Modem. Start the Router and Modem. Lights will flash on the Modem and Router. Once they stop flashing, plug in your PC, and bring up the Router screen. It may take up to 20 minutes before the (Dynamic) DHCP allocation will show, and the Connection etc. on the Router log.

4-Fire up the remainder of the PC's and set ALL of them to Dynamic TCP/IP. Again the Allocation and Connection will take time to display.

5-Hope this helps you, I have done this many times.

Another good question to ask the user:
Are you behind a router? How do you connect to the Internet? Do you actually have more than one computer connected to the same connection?i think you assigned static ip to your Lan Card.
Keep your Lan Card on Automatic if you are behind a Router (Inter service provider router, who configured their router )..
How to do this..
simpley
Double Click your NIC (LAN CARD) blinking at Corner.
Click Properties.
Double click TCP/IP (ipv4)
Select the First Option for AUTOMATIC IP.
Click OK
wait a while so it gain the ip from ISP router
If it don't worked..
ASSIGN another STATIC IP away in counting from the present iP..
keep trying...till the warning don't POP-UP