I'm in Iraq, trying to set up a VSAT network for a group of soldiers. I have the sat system working fine. I ran cat5e to several locations, when I hook up any location farther than 40 feet from the switch, the lights on their NIC card and on the switch will blink on then off very slowly. The computer on other end will flash the notification that a network cable is unplugged. Is this my cable? I have tested the cable with a pin tester that cycles through all 8 pins on both ends to confirm you attached rj45 properly, according to this I get signal through the wire, it just might not be strong enough or maybe there's interference. This has happened with five different cables. I'm using cat5e utp
Have 2 computers on this router. Windows xp on both. Keep receiving this message on only 1 computer, other one is fine. Switched cables & ports on both computers, but still getting same message on this 1 computer. Also using Lynksys modem & tried connecting directly from modem to computer but still got this "unplugged" message. Also tried new NIC card, but made no difference. Sometimes lights on router are on long enough to make the online connection, but sometimes it just blinks on & off too fast so I can't get online. This problem started approx 6 months ago with the "network cable is unplugged" message only showing intermittently. Now it's constant. Any ideas what could have caused this & most importantly, how do I fix it? It's driving me crazy.
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This sounds like a hardware failure, but just in case go to your computer Control Panel-Network Connections(Network and Sharing Center for Vista and above), and check your Network adapter settings. If your Network card is not showing, you may have a driver issue, or a bad NIC (Network Interface Card). It shouldn't matter that your router says" wireless hardware not detected", because you are hardwired from the computer to the router. I would check to see if you may have turned off, or blocked Ethernet connections on your router, I would then change my Cat5 (Ethernet) cable, and finally open the desktop and change out the NIC (Network Interface Card).
you must first plug into the network to get the line open. and know if the network you are plugging into has the right work group. you can see your work group in the windows properties by clicking start, computer, right click and properties. then look for your work group this should match all other computers on the same network.
A WAN is a wide area network. basically what allows you to connect to the internet. RJ45 is your phone line going to the DSL modem/routers internet port.
If all your lights appear to be working fine and your internet light shows activity i would do a double check to make sure your NIC is connected and not limited. Also make sure all your filters are in place on all the phone lines in the house except the line running to the dsl box.
It sounds like it could be a problem with a windows driver, though it sounds like it's getting an IP address.
First things first, flick it on and wait for it to start up, then once it's on do the following. Press the start button and, in the search bar, type cmd. Wait for it to bring to load a selection of icons above the search bar then find the CMD icon (this should be a small black box). Right click on this icon and select "run as administrator". Answer yes if it asks you if you're sure. This will open up a black window with a command prompt, try running the command "ping 192.168.1.1", if you get a reply back then there's nothing physically wrong with your PC, and it's a configuration problem elsewhere. Post back your results and I'll try to help you further :)
Run the winsock fix.
If you don't have it, try:
This is a direct link so it may not start automatically, but just click on the "click here" button.
Well, there are several options to look at. First, make sure that your software settings are ok.
Check Control Panel -> Network Connections. Is your LAN connection enabled? Check your TCP/IP settings and set IP address and DNS to Obtain automatically.
Can you ping your router? Open a command prompt (Win-key+R, type cmd and in the next window ping http://192.168.1.1
Do you have MAC address filtering enabled on your router? If so, disable it for now. Also check if your router reports your PC as connected. Go to the main menu of the browser interface, see under the Maintenance heading and select Attached Devices.
Then check the hardware:
Test your Ethernet cable connections and replace the cable with another one for testing. (If you don't have a spare one, switch it with the one from your modem to your router. If your laptop now looses it's internet connection, you know it's this cable.)
Are the green and yellow lights on your NIC (network card) blinking? Although very rare, but these things can die (had that before). If that's the case then you have to replace the card. If it the onboard-NIC (part of the motherboard), get a PCI card and put it in one of the empty slots.
That's all I can think of right now. Let me know about yor findings and then we take it from there. If you have any more questions, just come back here and leave a comment - I'm happy to help.
The wired nic in your laptop will have a separate ip address than your wireless nic. I suspect you either have the router not set to hand out ip addresses, the info it is handing out is wrong, or you may have a static ip set. Did you ever have the laptop working on the wired nic?
Try disabling the wireless connection, plug up the cat 5 cable, open a dos prompt and type;
Notice the information. Now unplug the cable, enable the wireless connection and do the same for the wireless nic. The ip address should be different, but everything else should be the same. Let me know what you find.
is the PC connection you're able to maintain once upgraded to WPA a PC that is physically connected to the router? if so, that would make sense because WPA (and WEP for that matter) are only wireless security protocols and have no protections for hard-wired connections.
In order to convert your system to WPA security, you must first make sure all of your hardware is WPA compatible (that isWPA Drivers are available for it).
For your PC wireless connection, if you're running Windows XP you can go to the microsoft website and download the WPA client. It is available in the Microsoft Knowledge Base Article 815485. install the update and reboot. you will then be able to enable WPA security on your client.
Then you'll possibly need to update the drivers for your hardware for WPA support (router, wireless NIC, etc) if they did not already come enabled.
next you get to configure the router for WPA. you'll want to make sure you're set to WPA with preshared keys (no authentication server required), use TKIP as the algorhythm, and leave group key renewal at it's default value. and of course Select a key that is not likely to be guessed. write the key down as you'll need to configure your NIC using it.
to configure your NIC, once you're in the configuration menu select WPA-PSK for your authentication, TKIP for the encryption mode, in data encryption set it to TKIP, and in the network key put the key you selected earlier.
At this point you should be able to access your wireless router (or other access point). These instructions were kind of generic since i do not have the specific router you're using available to me, but the settings i discussed should be pretty universal when it comes to WPA security.
if you are not able to connect through your main comp using wireless router...then first of all check the ipaddress of computer by..
start>run>type cmd>then type ipconfig in command prompt screen.check whether you get the ip address as 192.168...........and default gateway as 192.168........
if anything else reinstall nic card on your comp
Try first to reset it to the factoty settings by pressing the brown button on the back of the unit, next to the Internet connection. You will have to reprogram the router with your PPPoE settings, if any, and your wireless security.