Limited connection or no connectivity error help please..

[aTastyCookie01]

Hello guys, please help me, am begging you...
i started having this stupid problem after i built my first computer, in my old computer it was all fine, am using an ethernet cable between my pc and laptop, it is crossed or whatever its called, when i plug it in it gievs me an error, limited connection or no connectivity which pisses me off, i dont know how to fix it, it was all good on my old computer.. i have all the drivers installed everything is up to date..
sometimes it connects, but after 10 mins it disconnects again, and sometimes it works fine until i reboot my pc..

its really urgent

 

[Slimline]

Is the ip address your computer shows within the specified range your router is set to? )i.e 192.168.0.155 as opposed to something such as 169.254.1.258 or something) There are so many variables that can give you this error it is hard to pinpoint with what you describe. Have you tried resetting the router? Have you tried a different ethernet cable between your pc and router? Do you know how to access and setup your router?

For windows 7:
To check your ip click start, then run, then type CMD. Click the CMD that shows up in the search pain or hit enter, it should be the first result. You should see a window pop up in dos format.

Type ipconfig /all

Scroll up the listed information and there you will see your IPv4 address listed.

You could have a problem with your ethernet/cable (internet) modem. I would check the status lights on that to ensure it is working properly. If you have another computer in the house that works fine on the internet while your pc/phone is down that would rule out the internet modem being down.

I am no network guru but I may be able to help you get back up and running. You could have a software or hardware issue. As I stated before check all connections thoroughly, and try a different ethernet cable if you have one available. Try rebooting the router and your pc again, as well as the ethernet modem and go from there.

Slimline

 

[JackMDS]

Do you have any kind of 3rd party Network Manager installed, like Bonjour, Netmagic, and the likes?
Do you have any "Fancy" 3rd party security suits, or Firewall like the nVidia hybrid Firewall.
Are you using more than one Firewall (including Windows Native), AV, or other active security applications?
If you do use any of the above, try to get rid of them and see if it helps (Get Rid, means Get Rid, Not just Disable ).
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First scan the computer for Viruses and Malwares.
When you are sure that it is clean.
Check the Device Manager for valid Wire card entry.

http://www.ezlan.net/Win7/net_dm.jpg

If there is No valid entry, delete any Bogus Entry, and re-install the Wire card's Drivers.
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Try to install the latest drivers of the card from the support page of the manufacturer.

Download the drivers and unpack them to a folder of your choice.

In the Device manger, right click on the adapter.

Click on Update Drivers, and choose the Browse my computer for drivers,

Choose let me pick from a list, Click on Have a Disk and point to the folder with the Drivers.
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Check the Network connections to make sure that you have a Local Area Connection Icon/Entry, and that the Properties of the Icon (right click on the Icon) are correctly configured with TCP/IPv4 protocol in the Network Connections Properties.

http://www.ezlan.net/Win7/net_connection_tcp.jpg

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Make sure that No Firewall is preventing/blocking the Wireless components to get to the Network.

Some 3rd party Software Firewalls/AV/Security suit,s keep blocking aspects of Local Traffic even it they are turned Off (disabled).

If possible configure the Firewall /Security suit correctly, otherwise totally uninstall it, and get rid of its residual processes to allow clean flow of local network traffic.

If the 3rd party software is uninstalled or disables, make sure that Windows native Firewall is On .

3rd party Network mangers like Bonjour, NetMagic, and others can block local traffic too.

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Log to the Router's menu from a working computer and make sure that the DHCP is On and it is configured to assign IPs that can cover the number of computer that are connected (few more will be even better).

Switch Off the computer and the Router, Reboot the Router, and the computer.

Right click on the Wire card Network Connection, choose Status, Details, and see if it got an IP and the rest of the settings.
On IP status.

TCP/IP and its variables typically look like this.

Right click on the Wire card Network Connection, choose Status, Details, and see if it got an IP and the rest of the settings.

Typical TCP/IP status looks like this.

http://www.ezlan.net/Win7/status-nic.jpg

Description is the card manufacturing data.

Physical address is the card's MAC number.

The xx should be a number from 0 to 255 (all xx same number).

yy should be from 0 to 255

zz should be from 0 to 255 (all zz the same number.

The lease date should be valid to the current time.

*Note 1. IP that starts with 169.xxx.xxx.xxx is not valid functional IP.

*Note 2. There might be an IPv6 entries too. However, they are not functional for Internet traffic or LAN. They are needed for Win 7 special HomeGroup configuration.

 

[aTastyCookie01]

Am not using the lan cable between the pc and router, am using the cable between the laptop and desktop, to feed the internet from laptop to desktop.
thanks for the replies but i francly didn't understand a single thing from what you both said cuz am a newbie on stuff like this.

Jack i would appreciate if you use teamviewer to check this problem and try fixing it by yourself please, i already tried with a guy from tomshardware but with no succes and i really need the internet.
Also i am using a cross over ethernet cable between the two machines. is that the problem? new motherboard dont need crossed over ethernet cables?

 

[Slimline]

There is your issue. Not sure why you didnt say that in your original post. You have to bridge the connections in order to share, or depending on OS use "internet connection sharing". However, I highly recommend that you directly wire the desktop to they router, or spend 12 bucks and buy a wireless adapter to save yourself the headache.

PS. JackMDS, impressive troubleshooting list.

 

[mammador]

Have you assigned each machine with an IP address?

Have you assigned a workgroup to share files with? Crossover cables are not needed for newer NICs, so this may not be the issue. Which OS' are you utilising?