When i plug my dlink DSL-2640U router the lights start flashing and every time it flashs the wireless just drops down and i have to enable it from the settings .. then the router's lights flash an

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Cables connection might loosen up. Check cables that runs from the wall jack going into your modem, make sure all cables are tightly plugged in. Also, check indicator light on your device. If DSL light is RED, OFF, flashing red, flashing green. there might be trouble with your Internet provider. DSL light indicator MUST be always on STEADY GREEN. If you see that the DSL light is not on STEADY GREEN status call your Internet service provider.

Does your PC work on other networks reliably? If so- it's likely the DLink failing. The firmware issue is just a symptom as well. I'd recommend either seeing if you could use your DSL provider's original modem (if this was a replacement) or if you have another router- if it doesn't drop at that point, it was definitely the router/modem. However, if it drops still, you may have a line issue- but I severely doubt this since the symptoms are pointing to the DLink.

I’m happy to help further over the phone at https://www.6ya.com/expert/susan_42b401e0b1603d8a

There a great article at General Router Setup.
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Here is a direct link to show you how to secure your router, now you will need to reset your router to default settings before securing to do that press and hold the reset button located on the back of the router for 15 seconds or until router resets, you may need a paper clip to access the reset button.
http://ftp.dlink.ru/pub/ADSL/DSL-2640U/Description/DSL-2640U_B2_Manual.pdf

all wireless devices must be allowed in the router by either MAC address or by name. This is accomplished by logging into to the router and setting up the device in with the wireless setup feature in your router. The router will not allow the device to connect without permissions.

i have a dlink dsl2640u when i go in 192.168.1.1 and try to turn on the wireless and save it reboots 3 to 4 times then it stays on but the wireless is off any help

I presume it's a cordless phone? If so, it's possible that it's interfering with the wireless signal. If that happens you will see the wireless connection being dropped - go into the wifi config utility and check how good the connection is. If this is the case, changing the channel may help. To do that,bring the router over to your PC and connect with an ethernet cable (just in case something goes wrong with the channel change and you lose the wireless signal.).

You need to find the "router homepage" in your web browser. If you don't know what it is, in windows click start -> run -> type "cmd" and press enter. In the command screen that pops up type "ipconfig" and press enter. It'll show you a few things. One should say "Default Gateway" followed by numbers.Write those numbers down (probably will be something like 192.168.1.254).

Open your web browser (IE, Firefox etc...) and enter the numbers. This will bring you to the router page. There should be an option like "Wireless" and under there you should see "change channel". It may be in the advanced option window.


IF your computer is NOT dropping the wireless signal when the phone rings, but the internet connection does drop - check the DSL signal light on your dlink. If it is flashing or not on, then the problem is with the DSL filters (small white connectors sent with your modem.). Always ensure any phone on the same line as the DSL is filtered or it will cause the internet connection to drop whenever the phone rings or is picked up.

Have you tried turning DHCP on?

try a power cycle. unplug the power from the back of your modem. unplug the power from your router. shut down the computer. Plug the modem in frist wait until lights are normal. Check your cables make sure the modem is plugged into the wan port. then power on your router. wait until lights are normal plug in your laptop with a cat5 cable. start up the laptop see if your able to access the internet with the cable plugged in.

If so great your on line. open ie and goto your router ip address which i think is 192.168.0.1. its in your manual anyway. goto the wireless tab and make sure your wireless is enabled in the dlink router.


If your internet is not working then you need to setup your pppoe connection if your on dsl. and then do the wireless set up. default is usualy the ssid. [