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Windows 7: Internet connection not working when I open my desktop

18 Sep 2015   #1
bosslorenz5

Windows 7 Ultimate x64
 
 
Internet connection not working when I open my desktop

I have a 2 modem, 1) Is where the main connection is, 2) Is just a wifi which gets a connection from modem 1).
My desktop has a wired router onto modem 1.

The problem is when I try to open my modem 1 & 2, it has internet connections. But when i try to open my desktop while the 2 modems are on, the internet connection isnt working.

Only the way it works is when the 2 modems are on while the desktop is shut down.
Or the desktop & modem 1 are open but modem 2 isnt turned on.

How can i fix this problem? Need help ASAP.


My System SpecsSystem Spec
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18 Sep 2015   #2
GokAy

Windows 7 Ultimate x64 SP1
 
 

I am a bit confused. So, will ask a few questions to clarify:
- When you say a modem - do you mean Network Connection? Look at the screenshot
Internet connection not working when I open my desktop-network-connections.jpg
- Or do you mean (1) is modem/router and (2) is wireless access point?

It is possible that your wireless is getting disconnected when a wired connection is present. But all speculation on my end because frankly we have a language barrier at the moment.


My System SpecsSystem Spec
18 Sep 2015   #3
bosslorenz5

Windows 7 Ultimate x64
 
 

My pc is connected to the local area connection, and dont have wireless network connection. The wireless is just for our cellphones.

At first the 2 modems are working, but when i try to open now my desktop, the internet connection disappears but at the modem 1, its blinking "green".
My System SpecsSystem Spec
.

18 Sep 2015   #4
GokAy

Windows 7 Ultimate x64 SP1
 
 

It is possible that your 1st modem is in "bridge mode". When PC is off, wireless router gets the IP and works, but gives the IP to your computer once you turn it on.

Can you describe the 1st modem? How many LAN(Ethernet) ports are there at the back?

Does your wireless have any LAN ports? Describe its back side too.

Perhaps take photographs of the back sides, and post here.
My System SpecsSystem Spec
18 Sep 2015   #5
bosslorenz5

Windows 7 Ultimate x64
 
 

Right modem 1, left modem 2(wifi).
The ports that have color yellow frames are the LAN ports. And the silver router is on LAN port modem 1 connected on WAN port on modem 2.


Attached Thumbnails
Internet connection not working when I open my desktop-20150919_080925.jpg  
My System SpecsSystem Spec
18 Sep 2015   #6
GokAy

Windows 7 Ultimate x64 SP1
 
 

Do you have 3 different computers? All yellow cables go to a different computer? If any yellow cable go from modem 1 to modem 2 then remove it. Only cable between modem 1 (LAN port) and modem 2 (WAN port) should be the grey one. PC can connect to any yellow LAN port on either modem 1 or modem 2.

Let us know how it goes after you remove that extra yellow cable between modem 1 and 2.

(By the way, it is 3:22AM here, so I am going to bed and won't be able to answer. Hopefully, this will solve your problem. If not, check modem 1 management interface to see if it is in bridged mode, and disable bridged mode if so. It should be doing NAT.)
My System SpecsSystem Spec
18 Sep 2015   #7
bosslorenz5

Windows 7 Ultimate x64
 
 

Okay go get some sleep bro, thanks for the suggestions. Ill try that.
Its the DHCP right? So ill try to disable it
My System SpecsSystem Spec
18 Sep 2015   #8
Ztruker

Windows 10 Pro X64
 
 

Looks like one yellow cable goes between modems, connecting the Wireless router to the wired router.
My System SpecsSystem Spec
18 Sep 2015   #9
bosslorenz5

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by GokAy View Post
Do you have 3 different computers? All yellow cables go to a different computer? If any yellow cable go from modem 1 to modem 2 then remove it. Only cable between modem 1 (LAN port) and modem 2 (WAN port) should be the grey one. PC can connect to any yellow LAN port on either modem 1 or modem 2.

Let us know how it goes after you remove that extra yellow cable between modem 1 and 2.

(By the way, it is 3:22AM here, so I am going to bed and won't be able to answer. Hopefully, this will solve your problem. If not, check modem 1 management interface to see if it is in bridged mode, and disable bridged mode if so. It should be doing NAT.)
I removed the yellow cable that connects modem 1 to 2 and its working now .
Thank you so much guys for your suggestions.

But why last week it was just working with a yellow cable like that? Does the DHCP enabled makes the conflict?
My System SpecsSystem Spec
19 Sep 2015   #10
GokAy

Windows 7 Ultimate x64 SP1
 
 

Yes, you can connect yellow the cable from modem 1 LAN to modem 2 LAN (remove grey cable in that case). But make sure to disable one of the DHCP's. Two DHCP simultaneously will cause problems.
My System SpecsSystem Spec
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