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Solved: PC has "Internet Access" but cannot connect to the internet


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DexterDave's Avatar
DexterDave DexterDave is offline DexterDave has a Profile Picture
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02-Jun-2012, 04:28 AM #1
Solved: PC has "Internet Access" but cannot connect to the internet
Hi All

I have a strange problem. I have 2 PC's on a LAN, both Windows 7 Ultimate. Both PC's is connected to the same router via ethernet. Now PC number two has internet access and works great, but PC number 1 also shows "Internet Access" in the system tray and also in the network map, it shows that it is connected to the internet. But when I open ANY browser(FF, IE, Chrome) it cannot connect to the internet. Skype also cannot connect. As I said, the other PC (PC2) can connect fine and has the exact same setup as PC1. However, on PC1, when I manually connect via a dial-up broadband connection using the SAME username and password to my ISP as I used in the router config, it connects. The problem is that it loses the connection every 2 minutes or so...(failed to connect...redialing...). Can anyone tell me what I can do on PC1 to make it connect to the internet via the router the same way the other PC does?

Also, the two PC connects fine over the LAN between each other, but as I said, PC 1 cannot connect to the WAN the same way PC2 does.

Things I tried: I did a TCP/IP stack repair and rebooted. Nothing. I disconnected the 'working PC' from the LAN, nothing. I uninstalled the Antivirus and Firewall, nothing...

Router: Siemens Giga 762SX
Network adapter on PC1: Realtek RTL8139/810x Family Fast Ethernet NIC. I do have the latest drivers installed

Thanks
etaf's Avatar
etaf   (Wayne) etaf is offline
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02-Jun-2012, 04:39 AM #2
Quote:
However, on PC1, when I manually connect via a dial-up broadband connection using the SAME username and password to my ISP as I used in the router config, it connects. The problem is that it loses the connection every 2 minutes or so...(failed to connect...redialing...). Can anyone tell me what I can do on PC1 to make it connect to the internet via the router the same way the other PC does?
not quite sure i understand this
with a router you should not need to do this

so can we have the exact setup - make and models

Quote:
Also, the two PC connects fine over the LAN between each other, but as I said, PC 1 cannot connect to the WAN the same way PC2 does.
sounds like they are connected to the router all OK

what firewall / security do you have or ever had on the PC - like norton, mcafee - it maybe blocking
anyway from both PC do the following tests and post results - make sure we know which pc is which for the results

------------------------------------------------------------------------
ipconfig /all
If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post results here

We would like to see the results from ipconfig /all post back the results in a reply here

Hold the Windows key and press R, then type CMD then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):

In the command prompt window that opens, type the following command:

Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

ipconfig /all > network.txt & network.txt

It will export the results to notepad and then automatically open notepad.

Now all you need to do is copy and paste those results to a reply here
to do that:
From the notepad menu - choose Edit - Select all
all the text will be highlighted
Next
From the notepad menu - choose Edit - Copy
Now go back to the forum - reply and then right click in the reply box and paste
------------------------------------------------------------------------

------------------------------------------------------------------------
Ping Tests
If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post results here
Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and paste here.

Start> Run {search bar in Vista/W7}> CMD to open a DOS window and type:

Type the following command
Ping {plus the number thats shown against the default gateway shown in above ipconfig /all}
Post back the results
rightclick in the box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste

Type the following command
Ping google.com
Post back the results
rightclick in the box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste

Type the following command
Ping 209.183.226.152
post back results
rightclick in the box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
Quote:
For your information only
these tests will check various stages of the connection, the first ping test, ping default gateway checks to see if you still have a connection to the router the next two
Ping google.com & Ping 209.183.226.152 tests the connection to internet , one by name and one by number which checks that the dns is working

------------------------------------------------------------------------
__________________
Wayne
Please let us know what the final solution was to any problem posted

Last edited by etaf; 02-Jun-2012 at 04:55 AM..
EasycapExpertti's Avatar
EasycapExpertti EasycapExpertti is offline
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02-Jun-2012, 04:53 AM #3
Have You tried to disable router's own firewall:


In some routers there is firewall on with 1 or 2 first port.
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BPCS BPCS is offline
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02-Jun-2012, 05:01 AM #4
Etaf has perfect suggestions to diagnose your problem, thou I thought I'd add an idea. Do you have Norton AV? If so use the uninstall tool from thier website and dump it now. I am often in the minority but I have seen Norton cause all sorts of strange connection/printing/internet problems. IMO it's junk and cuases more trouble than good. Also do you possibly have more than one antivirus installed, either of which may not have installed properly due to one or more already present on the machine, possibly causing the problem. Lastly have you scaned for virus' or malware on the PC?
etaf's Avatar
etaf   (Wayne) etaf is offline
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02-Jun-2012, 05:04 AM #5
Quote:
I am often in the minority but I have seen Norton cause all sorts of strange connection/printing/internet problems.
your not on this site -have a look through networking and you will see we ask on almost every post - and we have seen norton, uninstalled in 2007 still cause issues some 4=5 years later
and not just Norton, mcafee, webroot avg - they have all caused issues

hence the question above
Quote:
what firewall / security do you have or ever had on the PC - like norton, mcafee - it maybe blocking
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02-Jun-2012, 05:16 AM #6
As I said in my post. I had ESET installed, but I uninstalled in completely.
@Etaf, thks you for this great answer, I will come back to you on your requests
DexterDave's Avatar
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02-Jun-2012, 05:26 AM #7
@EasycapExpertti - Thanks man! you saved me a lot of time. It was the firewall on the router indeed...But for some reason it only blocked the one LAN connection, and not the other one. How do I allow that one PC connection through other firewall? I tried different ports but it keeps blocking the one PC only. Thanks
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etaf   (Wayne) etaf is offline
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02-Jun-2012, 05:29 AM #8
you said you uninstalled the firewall

BUT what about oldtime trial versions like norton, they can be on the PC- but not used and cause loads of issues

also ESET
--------------------------------------------------------------

ESET Nod32 - removal tool
http://kb.eset.com/esetkb/index?page...nt&id=SOLN2116

--------------------------------------------------------------
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EasycapExpertti EasycapExpertti is offline
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02-Jun-2012, 05:43 AM #9
Quote:
Originally Posted by DexterDave View Post
@EasycapExpertti - Thanks man! you saved me a lot of time. It was the firewall on the router indeed...But for some reason it only blocked the one LAN connection, and not the other one. How do I allow that one PC connection through other firewall? I tried different ports but it keeps blocking the one PC only. Thanks
Great In some routers there is firewall on by default with 1 or 2 first ports - in my Telewell 501 router there was firewall on with 2 first ports and my solution in the beginning was to use ports number 3 and 4. Other way is to disable that router's firewall from its setting or try to make the rules for the traffic there in the settings - I don't know how to do that with Siemens routers.
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04-Jun-2012, 12:50 AM #10
@etaf - Yes I know I said that but I completely forgot about the router firewall. It is off by default normally but I must have turned it on sometime and forgot about it. I also didn't think it cause problems for only one PC on the LAN. Also I never have more than one AV installed on my PC, especially not Norton. Thanks for your answers again.
Regards
Dave
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