I have an IBM ThinkPadR40 With Intel PRO/100 VE Network Connection - but every time I hook up with an ethernet cable - I get "A network Cable is unplugged" It tries to connect - but can never achieve anything more than "Limited Connectivity", and that usually only for a few seconds.
I tried getting a new ethernet cable - no change.
I have looked for updates: I downloaded the AllNetworkAdapterDrivers_13_5 file from Intel and clicked "autorun.exe, chose "repair" and re-booted - to no avail. Then I tried "modify" instead of repair - but that didn't work either
I have tried to upgrade the drivers from my device manager - but it tells me that I have the latest.
I am not sure what is causing the problem. Assuming there is not a physical problem on your system board, here is what I would try if the computer was mine:
You could try the newer drivers at this point, but you might end up with the same problem as before. If you don't need the diagnostics and other settings from Intel(R) PROSet and Advanced Network Services, then try unchecking those components when you do the install.
I hope this helps.
I've been having a similar problem, I'm running linux (i'm gonna try it in windows as soon as i have a chance). I run a lenovo X61 and for the last couple months I have been unable to connect with my Intel gigabit Pro ethernet connection. I plug the cable in, the computer sees the device but however, whenever I run dhcpcd (which simply polls for an address and accepts the lease). When I do, it connects like normal, polls for a lease and then disconnects, and repeats this until it times out. As soon as i have a chance, I'm going to reinstall windows, and see if it's a problem with the linux drivers, because i've run several distributions and all have had this problem.
Many thanks for your post, I find it very informative! I have gone through all the steps with no luck, except the step number one,
Intel(R) PROSet has diagnostics in the "Link" tab that can provide
information about your cable, link partner, and hardware. Run the
diagnostics to see if you get enough information to resolve the
problem. Check the User Guide (It's in the root of the
AllNetworkAdapterDrivers_13_5 file you downloaded. Click on index.htm)
if you want information about running the diagnostics, settings, and
I only found Intel PROSet/Wireless which control my wireless card only, tried looking for it in my PC with no luck, and a quick google wasn't helpful too I would appreciate if you could pass more details.
To give you a clearer explanation about the problem
I am using Linksys product WRTP54G
and because I want to share internet connection from my PC to feed the router, I have to connect it to the router through the internet socket (blue , first left)
but, I will never establish a connection with it! while it will establish connection with any of the the ethernet sockets (yellow), only if the NIC speed was set to 10Mbps..
this is not the case with other laptops I have, they all work fine and flawless with the linksys router, without even the need to adjust the card speed or anything.
So, I am a bit confused here..
Thanks in advance for your kind help!
In my 100 base-T home network, I have found that the best performance comes from manually setting the link speed to 100Mb/s half-duplex not full duplex. It appears that the Intel may have swapped these settings in their driver. Relying upon Auto-Negotiate can be troublesome if you have Gigabit hardware and sub-standard network wiring (as I have).
I find that using www.speedtest.net connecting to one of their recommender servers has been the best way to choose the optimum link speed.
PROSet for your wired Ethernet adds tabs to the network connection properties in Windows device manager. I run "devmgmt.msc" as a shortcut to open device manager. An Intel support article, Where is Intel® PROSet and what is it?, gives a little more information.
As to why you can't get a connection on the Internet port of your Linksys router, I am not sure what is happening here. Perhaps using an Ethernet crossover cable would help. However, with most equipment these days, you don't need a crossover cable. Hopefully, running the diagnostics will give you some help figuring this out.
Hello Mark, sorry for being a bit late, but I started to lose hope with my ethernet card...
I went to the link you kindly posted, downloaded the driver with full package (Intel PROSet) but again... I ended up here
ok! a breakthrough!
Managed to install the new driver with PROset software after unistalling the old driver through the registry (too bad that intel uninstall utilities didn't help).
Ran the intel diagnostic with cable connected to the yellow hub and blue hub (my wrtp54g linksys router). it showed no problem with the yellow hubs (althoug it will only establish connection if the speed is set to 10Mbps), while ~"cable crossover dismatch"~ message showed with the blue socket. so it is clear that I have to change to the cable with crossover type. will try it and post feedback.
I have question here:
Perhaps using an Ethernet crossover cable would help. However, with most equipment these days, you don't need a crossover cable. Hopefully, running the diagnostics will give you some help figuring this out.
My notebook is 2005/2006 model, shouldn't my Ethernet card has the auto switch [Automatic MDI/MDI-X] capability to work with all kind of cables? or it is too old for this technology?
I am learning new thing! thanks people
I am happy you managed to make some progress. As to your question on the crossover cable, the automatic detection feature is not part of the standard when it comes to 10/100 Ethernet. Therefore, you never know if you will need the crossover cable or not. When you plug into normal switch or hub ports, a straight cable works fine as you found out.