Windows 7 2 differnet computers now giving 'no default gateway' errors - but LAN works

Blank Reg

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Sep 20, 2015
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9
As far as I can see, this seems to have started to occur within the last week...

2 computers on LAN: desktop and laptop.
Both using wired (gigabit ethernet) connections
My little network icon in the system tray often goes to a yellow ! exclamation mark, sometimes a red X (it seems to happen mostly upon initial logging into Windows after booting up)
Clicking troubleshooting says to check the router.
My 2 computers can see each OTHER fine when this happens - I can view shared folders and copy files fine between them.
But NO internet access when this problem occurs.
I can still access the router's admin pages via 192.168.0.1
Cannot ping anything on internet - says no route to host.
This problem started occurring on both computer roughly over the last week. (It's Sep.20/2015 as of typing this right now). I noticed both computers did a large batch of Windows Update updates (like 20+ on each!) a couple days ago.
OS on both: Win7 Home Premium

Has there been a Windows 7 update recently that has made this a common problem with people?

My network drivers are up to date.

I have not changed any config on my router or on either of the 2 computers recently (not even remotely recently).

This is very important as I'm not a person who uses the computer infrequently to go on YouTube and watch funny cat videos - my desktop here is what I do all my work on: banking, work emails, other important things on the web, etc, etc.

Suggestions?

Thank you SO much in advance for any help!!
 

Last edited:
Solution
USUALLY... if I boot up and it gets a connection, it stays. I noticed yesterday it was ok here on the desktop but failed after I booted up the laptop in the other room. Not sure if that had anything to do with things or just coincidence.
Then the only thing I can think of is as both computers are using the same IP address, in that case at least one of them has in its TCPIP V4 configuration a fixed IP address. Both computers should have been set to automatically obtain an IP address and automatically obtain a DNS server address. But with both computers using the same IP address you can't exchange files between them and you can....

Just seems odd that I noticed this after both computers here did a rather large set of windows...
Yes, let's wait and see.

B.t w. which DLink have you (when I see this spec:
http://www.dlink.com/-/media/Consumer_Products/DAP/DAP 1665/Manual/DAP_1665_A1_Manual_v1_01_EU.pdf
there are there are lots of possibilities to go wrong.

Henk

It's a DLink DAP-1320 - it's just a tiny little box: no wired ports. It's only to extended wifi to wireless devices.
 

Thanks, I have found the manual. When needed we will go into it.

Henk
 

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