Suddenly no Internet connection

[LinusT]

Hi, Yesterday i was online as normal but today when i got home from school i had no connection at all.

Been searching for 3 hours and trying everything to get it to work but no success at all. The other computer in the house has connection and it works perfect on that computer.

Both of the computers are wired to a modem.
I have Windows 7 Ultimate 32-bit on the computer that it doesnt work. The same connection at my home has worked a year until today.

It says Unidentified network and when i do ipconfig it says:

IPv4 Adress : 169.254.162.49
Subnet Mask : 255.255.0.0
Default Gateway : (blank)

When i try to ipconfig /renew it says :
An error occured while renewing interface Local Area Connection : unable to contact your DHCP server.
No operation can be performed on wireless network connection while it has its media disconnected.

Also tried disable IPv6 - System Restore to yesterday, Restarting modem and try with other ports and the other cable, downloading drivers for my network card.

please help me

 

[Lemur]

Did you try ipconfig /release
and then ipconfig /renew

Some viruses can also wreak havoc, so scan away.

What if you reboot into safe mode with network connection?

 

[chev65]

Hi, Yesterday i was online as normal but today when i got home from school i had no connection at all.

Been searching for 3 hours and trying everything to get it to work but no success at all. The other computer in the house has connection and it works perfect on that computer.

Both of the computers are wired to a modem.
I have Windows 7 Ultimate 32-bit on the computer that it doesnt work. The same connection at my home has worked a year until today.

It says Unidentified network and when i do ipconfig it says:

IPv4 Adress : 169.254.162.49
Subnet Mask : 255.255.0.0
Default Gateway : (blank)

When i try to ipconfig /renew it says :
An error occured while renewing interface Local Area Connection : unable to contact your DHCP server.
No operation can be performed on wireless network connection while it has its media disconnected.

Also tried disable IPv6 - System Restore to yesterday, Restarting modem and try with other ports and the other cable, downloading drivers for my network card.

please help me

You will want to reset your router. Do not disable IPv6.

As it stands you aren't recieving an IP from your router via DHCP so it will need to be reset by holding down the small hidden button on the router, usually it's hiding inside a small hole on the side of your router. Resetting the router is the easiest fix for this type of problem and it happens all the time.

There is usually a certain procedure for this depending on the router.

 

[LinusT]

Yes i tried release then renew.. No success. Just tried in Safe mode with network.

Still Unidentified network and same as before..

gonna try scan for virus

 

[chev65]

Unidentified network Hmmm never heard of that one before LOL, joking because it happens here on a daily basis.

Do you by any chance have anything from apple installed like Itunes or perhaps adobe photo suite?

 

[Lemur]

You can try Chev65's suggestion, or first "power down/power up" your router. But I don't know how that would explain one wired pc getting an ip while the other does not.

 

[Lemur]

Unidentified network Hmmm never heard of that one before LOL. Do you by any chance have anything from apple installed like Itunes or perhaps adobe photo suite?

Come on Chev65, what do you have against little innocent "bonjour"?

 

[chev65]

You can try Chev65's suggestion, or first "power down/power up" your router. But I don't know how that would explain one wired pc getting an ip while the other does not.

Don't know how it's possible but it happens, I've even had wired but no wireless before and resets have fixed that also.

Of course that old bonjour problem could be rearing it's ugly head again.

 

[LinusT]

Ive seen the Bonjour issue. I had Bonjour and followed a guide to remove it and its nothing left of it on my computer. I haven't got itunes. just Photoshop and adobe reader. hmm.....

 

[LinusT]

Also just reset the router and still back to the same.

 

[Lemur]

Ive seen the Bonjour issue. I had Bonjour and followed a guide to remove it and its nothing left of it on my computer. I haven't got itunes. just Photoshop and adobe reader. hmm.....

I have the CS5 suite and no problems.

Did you power down/power up? Wait a minute before powering up. If you have a modem and wireless router, do so for both.

 

[LinusT]

Ill try a power down/power up, coming back here soon with results..

 

[chev65]

Oh yes, I suppose that the bonjour problem and the adobe photo suite being installed was just a lucky guess on my part? Do you know how many times I have helped fix that particular problem? About a hundred times and still counting, twice just last week in fact.

I would make extra sure that bonjour is removed completely from the system.

Under the Services tab uncheck the service called "bonjour ##Id_String1.6844[... and then a bunch of numbers]" by Apple

Then to make sure it's removed and can't start up.
1. Navigate to C:\Program Files\Bonjour
2. Rename the mdnsNSP.dll file in that folder to mdnsNSP.old
3. Restart your computer
4. Delete the Program Files\Bonjour folder

 

[LinusT]

I did the power up power down on the modem for almost 5 minutes, and a modem is the only thing i got. i haven't got any router. aaaaaaaargh this makes me crazy.

 

[LinusT]

Oh yes, I suppose that the bonjour problem and the adobe photo suite being installed was just a lucky guess on my part? Do you know how many times I have helped fix that particular problem? About a hundred times and still counting, twice just last week in fact.

I would make extra sure that bonjour is removed completely from the system.

Under the Services tab uncheck the service called "bonjour ##Id_String1.6844[... and then a bunch of numbers]" by Apple

Then to make sure it's removed and can't start up.
1. Navigate to C:\Program Files\Bonjour
2. Rename the mdnsNSP.dll file in that folder to mdnsNSP.old
3. Restart your computer
4. Delete the Program Files\Bonjour folder

I haven't got any Bonjour in my services list anymore as someone told me to do that earlier today. And no single files left of bonjour. Still doesnt work..

 

[Lemur]

Okay, try switching ports (switch the rj45 connections)

 

[LinusT]

I've tried that too, same problem and on the other computer it always works out fine..

I can upload pic of my Ipconfig /all from the normal computer and the non-working one.

I've tried to put the same Default Gateway as the working computer but nothing happens

 

[chev65]

ipconfig /all would be helpful yes.

 

[LinusT]

Heres the Ipconfig /all from both the computers. The one not working is a laptop and the other a stationary

first one from non-working and this second from working

 

[Lemur]

Ursäkta mig. Did you say you reinstalled or tried to upgrade your network driver?

**EDIT** We now know it's a problem with the pc.