Sometimes no internet connection when starting

[Fabian H.]

Hello,

a few weeks ago i opened a post about the same topic, but since new informations are available and i wanted to explain it more clearly, i've made a new one.

 

So, i build a new computer. I'm running windows 10 and got the msi z270 gaming pro carbon motherboard. The problem is that sometimes when i start the computer, i dont get connected to the internet.

When clicking on the problem, windows tells me that the ethernet cable is not connected. Obviously it is. 

 

I exchange the cable without success. Recently i RMA'ed the motherboard and since i didnt have the problem for the last ~10+ restarts i thought it was gone. However, when i just started the computer i did not have an internet connection. As i said the problem seems to occur rather randomly. With up to 10+ restarts between the problem happening, it is not a very frequent problem either. 

Sometimes i can get it to work when going to the ethernet settings in windows and clicking on change adapter settings and then deactivating and activating the connection a couple of times. 

 

Since i already switched out the cable and the motherboard itself, what else could it be? I guess if it's not the hardware, then it should be something software related?

I'm using the same router and the same plug in the wall to access it as i did with my old computer. Until i got my new computer i didnt have any problems related to my internet connection. So the router and cables in the wall should be working fine too. Could it be something IP related? I believe to remember that my dad had to give my smartphone a fixed IP adress for some reason.. but that was ages ago so i dont really remember what the problem was.

 

At this point i'm really frustrated and dont know what to do anymore. I would be really glad if somebody could help me.

 

Thanks in advance,

Fabian

[Changis]

check your router/switch it's connected to.

[Fabian H.]

On 30.6.2017 at 10:28 AM, Changis said:

check your router/switch it's connected to.

 

I just encountered the problem again, so i tried to log into the router by entering its adress into the browser. Connecting was not possible, just like with any normal website. 

I forgot testing the internet connection with some other device, so I will have to do that next time. However, since the problem only happens when starting my computer, and never while it's running, i dont think that the router is causing any problem (at least none that would affect other devices at the same time). Especially since it didnt happen with my old computer, or any other device as far as i know, at all.

 

My setup is rather simple. The ethernet cable goes from my computer to the wall, from where another cable leads directly into the router. No other switches or anything along the way. 

 

So, what does this mean? I guess there has to be a problem between the router and my computer, but i'm confused about what might cause it.

It shouldnt be the hardware, since i already exchanged the cable and the motherboard. But since i'm running a fresh installation of windows and installed the drivers, i dont know what could cause the problem software-sided. 

 

Any ideas on what i should do to isolate the source of the problem?

[Changis]

7 hours ago, Fabian H. said:

 

I just encountered the problem again, so i tried to log into the router by entering its adress into the browser. Connecting was not possible, just like with any normal website. 

I forgot testing the internet connection with some other device, so I will have to do that next time. However, since the problem only happens when starting my computer, and never while it's running, i dont think that the router is causing any problem (at least none that would affect other devices at the same time). Especially since it didnt happen with my old computer, or any other device as far as i know, at all.

 

My setup is rather simple. The ethernet cable goes from my computer to the wall, from where another cable leads directly into the router. No other switches or anything along the way. 

 

So, what does this mean? I guess there has to be a problem between the router and my computer, but i'm confused about what might cause it.

It shouldnt be the hardware, since i already exchanged the cable and the motherboard. But since i'm running a fresh installation of windows and installed the drivers, i dont know what could cause the problem software-sided. 

 

Any ideas on what i should do to isolate the source of the problem?

have you changed the cable and plugs in the wall? there might be a mismatch or short in the cable..
i would borrow or invest in a cheap network tester so you are sure the cabling is ok.
 

[Fabian H.]

1 hour ago, Changis said:

have you changed the cable and plugs in the wall? there might be a mismatch or short in the cable..
i would borrow or invest in a cheap network tester so you are sure the cabling is ok.
 

Yes i did change exchange the cable. I used the old one i never had problems with, some other cable i found lying around, and even bought a new one. The connection from my computer to the wall shouldnt be the problem. I have no way to get to the cable in the wall, so i didnt exchange that. It worked perfectly fine with my old computer tho.

 

Wouldnt mind investing in a network tester to isolate the problem. Can you recomment anything specific? I have no idea if there is something i have to pay attention to when chosing a network tester. Until now i didnt even know those existed.

[Changis]

3 hours ago, Fabian H. said:

Yes i did change exchange the cable. I used the old one i never had problems with, some other cable i found lying around, and even bought a new one. The connection from my computer to the wall shouldnt be the problem. I have no way to get to the cable in the wall, so i didnt exchange that. It worked perfectly fine with my old computer tho.

 

Wouldnt mind investing in a network tester to isolate the problem. Can you recomment anything specific? I have no idea if there is something i have to pay attention to when chosing a network tester. Until now i didnt even know those existed.

depends on your testing needs, but most people just need one that can say if there is connection or not on the leads and if it's crossed, basically any network tester should be able to do that, if you want something more pro, look at fluke instruments (pretty expensive, but great quality) but unless you are diagnosing big networks, you don't need it, just get a cheapo one