netwokork issue I can't connect to the internet

Hello everyone,

I am helping a client. All the 8 PCs are up and running and able to surf the internet except one. All the computer feed are coming out form the same net gear switch. I rebooted the switch, I replaced the cable. I changed port on that switch but nothing no internet connection for that pc.

one thing I noticed,is that when I tried  to connect a laptop directly to the switch I couldn't' go on line. the NIC shows the green and orange light like is it is moving data back and forth but no internet connection. how is that possible ? I removed the computer that was perfectly connecting to the internet and in the same wall jack I connected 2 different laptops. none of them can connect to the internet ?? how is that possible. They both receive an IP address, the NIC cards shows lights but no internet connectivity...

What am I missing ? Any idea ? Can you help please ?

Thank you so much....

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Joe Winograd, Fellow&MVEDeveloperCommented:
Hi Italiabella,

Try this:

Control Panel
Network and Sharing Center
Change Adapter Settings
Right-click on the adapter

Run through the troubleshooter — I've had very good results with it — usually is able to fix the problem. Regards, Joe
Thomas GrassiSystems AdministratorCommented:
You said they are getting an IP address

The computer that is not working

1. Can you ping the address of that computer from another computer?

2 on the problem computer can you ping

Check DNS

Post ipconfig from working and the non working computer

Are you using dhcp? If so what is the dhcp server

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JohnBusiness Consultant (Owner)Commented:
Try resetting TCP/IP:

Open cmd.exe with Run as Administrator
Then  netsh int ip reset c:\resetlog.txt
Also, ipconfig /flushdns followed by net stop dnscache followed by net start dnscache
Then restart the computer

See if the reset helps.
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ItaliabellaAuthor Commented:
all great points and I apologize for the late response. Reading all your comments pointed me to the right directions. I found out that that computer was receiving a different IP .

Alll the 5 working computers were receiving the following IPs 192.168.1........the one that wasn't working was receiving 192.168.2..... where did it get that 2 from ? that means that it is receiving an IP address form a different device correct ?

IS that possible ? I think that in that network there must be another router that sends out different IP messing up computers and access point...

I will need to discover more ....

Thank you everyone.... I was able to fix that problem but I ma afraid that that problem will comeback again...
JohnBusiness Consultant (Owner)Commented:
@Italiabella  - Thanks and let us know if the issue returns.
ItaliabellaAuthor Commented:
Yes, IF I don't find what device is giving away a different IP that problem will mess up some other computers...I certainly will. Thank you John.
Joe Winograd, Fellow&MVEDeveloperCommented:
> there must be another router

Doesn't have to be a router. Many devices can act as a DHCP Server, including Windows servers, Linux/Unix servers, managed switches, and others. In any case, I'm glad you were able to fix the problem. Regards, Joe
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