Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Local Area Connection doesn't have a valid IP configuration

14 Mar 2015   #11

Windows 7 Pro x64 Windows 10 Pro x64

A modem is a modem and a router is a router.

The switch is not the problem.

The pc is not the problem.

My System SpecsSystem Spec
14 Mar 2015   #12

Windows 7 Pro

Quote   Quote: Originally Posted by AddRAM View Post
A modem is a modem and a router is a router.
Far from it, my modem is also a router, for example. A router doesn't have to necessarily be a separate box, many modems these days come with both integrated routing and switching capabilities. Whether the router will be integrated into the modem box or a separate device - it's irrelevant.

What is also irrelevant is the brand of his modem. Networking devices operate on standards. It's clear that he has a DHCP issue, so a look at the dhcp settings is the best way to determine the problem.

P.S. I just saw that you edited your earlier post...with tons of erroneous information, to boost. You have no idea what a router does, apparently. So I will explain it to you really quick:

routers simply connect networks and they do so based on IP addresses (Layer 3 in the OSI model)

As far as connecting your modem directly to your computer - you can't do this unless:

1. You have entered a proper static IP.
2. Your modem offers DHCP services.

If your modem has DHCP - that means it has a router, as only routers (and layer 3 switches) can switch traffic based on IP addresses. Which also brings us to NAT, another router feature that a modem would not have. What the modem does, let's say a cable modem, is to translate your Ethernet frames to DOCSIS, for instance.
My System SpecsSystem Spec
16 Mar 2015   #13

Windows 10 Pro X64

Here is a nice, simple (sort of) explanation of what a switch is and does.

No, a switch cannot perform NAT and translate public(s) IP addresses into private addresses.
A switch is a network device that filters and forwards packets between LAN segments. Switches operate at the data link layer (layer 2). So, they are not aware of IP addresses which are network layer (layer 3). A switch keeps a record of the MAC addresses of all the devices connected to it. With this information, a switch can identify which system is sitting on which port. So when a frame is received, it knows exactly which port to send it to, without significantly increasing network response times.
My System SpecsSystem Spec


 Local Area Connection doesn't have a valid IP configuration

Thread Tools

Similar help and support threads
Thread Forum
Local Area Connection doesn't have a valid IP configuration
I get the error "Local Area Connection" doesn't have a valid IP configuration in Windows 7.This is my desktop computer and is a direct connect to my broadband modem. All of my wireless connections are working. I have had Comcast out and there is no problem with the modem. This started on Jan 3, 16....
Network & Sharing
Local Area Connection doesn't have a valid IP configuration
am currently unable to connect to the internet. Windows 7 64bit, hard wired connection. This problem has been happening off and on lately, and it seems to fix itself. But Ive currently been out of internet for 5 hours and its driving me crazy. For some reason my internet decided to stop...
Network & Sharing
Local area connection doesn't have a valid IP configuration
Hey everyone, I'm knew to the forum :) First time posting. So my problem is that we just got a knew ISP like 4-5weeks ago and they gave us the modem and it only has 1 port so we bought a TP-LINK TL-WR841N. It was all good until I got the error massage one morning that no valid IP configuration...
Network & Sharing
Local Area Connection doesn't have valid IP configuration
Guys, I really need your help. I got a new laptop a couple days ago. It was for work so I brought it to the office. We have an open network in the office, you just need to plug into it with a regular cable. We've had it for years and it always worked. Not this time. When I'd first plugged it,...
Network & Sharing
Local Area Connection doesn't have a valid IP configuration
Recently, I can't connect to the internet. when I tried to troubleshoot the problem, it gave me the following line : "Local Area Connection doesn't have a valid IP configuration" I have two PCs and when I connect the mothem/router to the second PC, everything is okay and internet is on (So I am...
Network & Sharing

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 21:13.
Twitter Facebook Google+