PC can't pull an IP address from a working connection

Hi
I get that you was connect to the internet by wireless connection .
so in you connect with access point connected directly to dsl modem so try to restart the access point and try to connect again ...and reset the wireless in your device... may be it works .

I think this problem occur cause access point or DHCP server cant give your device new IP address..
so you must clean the DHCP leased addresses by restart the access point or enter to server and do that from DHCP .

else you can try to assign static ip address has the same network id with router ..
for example : if router ip is 192.168.1.1 so you must assign ip address like :
192.168.1.x while x number between 2 and 254
hope that helps you

You may be trying to connect through a G or B device to your N router. Verify that there are no serious obstructions or that the pc is not underneath something or enclosed. Metal near the pc can cause the signal to lose strength. Not having a wireless N card or adapter can also cause this.

Also if you are trying to connect through ethernet cable verify that windows is being assigned an automatic ip address, if it is static in windows change it to automatic.

this is a DSL router I think
Try pulling the power to the DSL Dlink wi fi router.
For 30 seconds then plug in back in and switch it on again.
If you have a DSL modem attached to the Dlink wi fi device then down power the DSL modem and wait 30 seconds and repower it up. Wait 5 minutes for it to resync with the dsl on the phone line.

As a side note
Have you had the DSL upgraded like from dsl -1 to DSL -2 if yes then check the dsl filter on the phone line sockets can handle DSL - 2

Diagnostics
go to the P.C windows o/s I hope .
Go to command prompt
ping the routers ip address
10.0.0.1 or 192.168.0.1 is the most likely ip address
type in ipconfig
press enter
what is the default gateway (this is the router ip address)
Type in tracert www.google.com
press enter
Can you resolve the DNS name . and get an ip address
if no then DNS server issue check DNS server settings are they on AUTO . in modem or DSL router .
See if the IP hops get to the modem or to the ISP .

how can put ?
username,password ?

This sounds like a problem with your DSL modem, not the router. Try unplugging both devices and wait about 10 seconds. Plug in the modem first and wait about 30 seconds (at this point the Internet light should be on). Now plug in the router and wait another 30 seconds. This problem is normally due to the modem not getting sync. I would try plugging your laptop directly into modem if this doesn't work to see if you then have Internet. If not call your ISP.

The thing you don't say, is that you already have a high speed network connection by either DSL or cable. You already have a modem/router that you plug into for your internet. This one is an extra one you would like to use as an access point for your home wireless network.

You will need to set it up as a router not a gateway in the configuration. You should turn off the DHCP for the wireless router and just let it perform pass thru to the primary router to assign IP addresses. Set up the wireless router to have an IP address in the same subnet as the primary. If primary is 192.168.1.1 set the wireless routers IP to be 192.168.1.2 or 192.168.1.3, etc. Then set up the configuration for the wireless settings and test the wireless connections with a laptop or PC. Plug the Wan connector on the wireless router to one of the ports on the primary router and you should be good to go.

that is right the access point does not have a dhcp server. that will give an ip address to all of your computers or device connected to it wireless. If you have a modem with a dhcp server there will be no problem with the IP but if the modem does not you must have a router and now an access point.

For a new unit disconnect the eoc from the network and connect directly (through POE injector of course) to your laptop/pc.  then in network connections setup your lan port TCP/IP settings as follows.  ip 192.168.1.10 subnet mask 255.255.255.0 then gateway 192.168.1.1

point your browser to 192.168.1.1 or 192.168.1.2 (one if it is in AP mode and the other address works if it is in bridge mode).

When configuring, I assign it an new static IP outside of the DHCP assignment range.

To see how it is setup afterwords you can use hyperterminal with a null modem cable to view the current config.  instructions on the engeniustech.com support page.

The DSL router/modem will receive an address from your ISP (Qwest) and will assign an address to the connected PC.

There should be a cable that goes from your DSL modem to your PC. It'll either be a USB cable (flat rectangular plug on the PC end), or a RJ45 (looks like a wider telephone plug).

If there is neither connection between the DSL modem and your PC, then the PC can't "talk" to the DSL modem, so it's not getting an address from the DSL modem.

What are you using for Internet connects? do you have the Access point connected to a Router. or is it connected to the Cable or DSL modem. I will need more information to complete this. If you have a router is is set to give an IP address or do you have a static IP? If it is set to give a Dynamic ip change the access point to recieve ip address from router and same with computer. If your connected directly to the Modem with the access point and you only have one IP address it will be used by the access point and not allow the computer to connect.
for more help please provide your internet (DSL, T1, CABLE) if you have router,  how it provides IP, and how access point is connected to it.