*Resolved* Weird wifi issue - Dell laptop shuts down entire network

[Cooky]

My sister has a normal home setup w/ a wireless router, and several wireless endpoints (iPad & laptops).
She recently bought a new Dell laptop.

She claims the Dell can get on wireless, and get alone w/ the other wifi devices just fine, but when she puts the Dell in sleep mode, all of the wifi endpoints' wifi connections would drop.
When she wakes up the Dell from sleep mode, all of them would then connect.

I have years of networking experience, and have never heard of anything like this.
If anyone's had this weird issue, and know what to do please let me know.

thanks!
//======================
9/19/2013
This is no longer an issue.
Sister & brother in-law didn't describe all components in detail correctly.
They got an xFinity/Comcast combo router, and removed the original Linksys wireless router, which was an additional change to the new Dell laptop.

The xFinity combo router apparently had problem making all wireless nodes stay connected.
After they put the original Linksys router back in, issue went away.

Thanks for those that replied & tried to help.

 

[Fardringle]

Does it only happen when the laptop goes to sleep, or does it also happen if the laptop is hibernating or turned off? Or if it just goes out of range of the wireless?

 

[John Connor]

I have no idea what would cause this. But I wonder if it has to do with NetBIOS and sharing. I would try to turn off NetBIOS.

 

[chamji]

What is the model of the wifi router and is version.
Backup all the settings of the wifi router. And do a reset.

Make sure the default gateway address of all the pcs is assigned correctly

Besides do keep an eye on your router who is connected


Scan her dell laptop for malwares using malware bytes anti malware.
Then scan it for viruses.


Post ipconfig /all on all PCS.

In other pc post a Tracert to Google. Com.


Now when she sleeps the laptop and the problem occurs.

Use Tracert again.