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Computer stopped connecting to the internet?

Last response: in Networking
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April 16, 2013 9:10:08 AM

I have a custom desktop that I have hooked up directly to into my router via ethernet, and for some reason it just dropped internet connection out of the blue yesterday. I was playing video games when I got disconnected and I haven't been able to get it fixed. I've unplugged the router and modem several times trying to reset both of them. When diagnosed by windows it says my modem or router is unavailable. In the network and sharing window it says my PC has limited connectivity to an unidentified network. It also says the connection is a local area connection. I have a Linksys router, and Comcast cable modem. Any help would be greatly appreciated, this is becoming very irritating because I want to play video games! Thank you for your help.
April 16, 2013 9:36:53 AM

The unidentified network is most likely your local lan (router, Ethernet cable). First, open a command prompt window and type “ipconfig /renew”. That resets your ip and connection status.

If there is no change, try pinging the router. I'm betting your connection with the router is good. But if it isn’t, reset the router to factory presets using your manual.

Following that, reset your cable modem. You will have to power down your router and PC for this as well. Turn on the cable modem and wait for the lights to stabilize. Then turn on the router and then the PC. The cable modem has to pull its gateway and ip configuration. Then the router has to pull its information from the modem. Finally the PC pulls its IP config from the router.

If that doesn’t work, call Comcast. You might need a new modem.
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April 16, 2013 9:47:10 AM

groundrat said:
The unidentified network is most likely your local lan (router, Ethernet cable). First, open a command prompt window and type “ipconfig /renew”. That resets your ip and connection status.

If there is no change, try pinging the router. I'm betting your connection with the router is good. But if it isn’t, reset the router to factory presets using your manual.

Following that, reset your cable modem. You will have to power down your router and PC for this as well. Turn on the cable modem and wait for the lights to stabilize. Then turn on the router and then the PC. The cable modem has to pull its gateway and ip configuration. Then the router has to pull its information from the modem. Finally the PC pulls its IP config from the router.

If that doesn’t work, call Comcast. You might need a new modem.


I don't think it could be the modem because I'm accessing the internet just fine on other computers. Is that possible?
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April 16, 2013 9:57:21 AM

Try another cable.

If no go, try pinging 127.0.0.1.
This is the loopback IP address. It will try to ping your PC.

If it responds, your PCs LAN connection is fine.

If not, it could be the router, even if other PC connected to it work fine.

You might also try the other LAN ports on the router.
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April 16, 2013 10:18:59 AM

I've come to the conclusion that it is in fact the router. Something happened to where it just isn't working with wired connections, because I've tried different cables in different ports and even into different computers and I'm still getting the problem.

Looking at wireless adapters/cards--any suggestions? I do a lot of online gaming.
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April 16, 2013 11:37:07 AM

why not replacd the router or atleast try a factory reset or firmware update.
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April 16, 2013 12:17:07 PM

ikaz said:
why not replacd the router or atleast try a factory reset or firmware update.


Factory reset and firmware update didn't work. Something must've just happened to one of the ports. It'd probably be cheaper for me to get an adapter as opposed to an entirely new router
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April 18, 2013 12:18:43 PM

Hey guys I'm not too sure if I want to invest in an adapter/new router just yet. Is there anyone who could help? This is what the network and sharing center looks like right now

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!