Wifi network gets all messed up when I connect my laptop

March 27, 2015 at 15:40:37
Specs: Windows 7

I've been facing a very strange problem for last 2 months. I have a 4Mbps internet connection and its wifi works perfectly on all the devices (iphone, Galaxy Tab, Galaxy s4 etc ) but when I switch on my laptop, internet works fine for sometime like 10-15 mints , after that the whole network speed drops tremendously (ping rate goes higher and internet speed drops down to 0.5-1 mbps) and i would not be able to get good speed in any of my devices as if it has affected the whole wifi network. I use Netspeedtest app on my iphone to observe the whole scenario. And when i switch off my laptop's wifi, internet speed comes back to normal in a matter of few minutes.

What I have tried so far:
1) Tried ethernet cable, problem was still there meaning there was nothing wrong with my WLAN card.
2) Also tried a different browser, no improvement. Though i use google chrome normally.

I posted this problem here 2 weeks ago and initially we thought it was virus/malware which was causing this problem, then with the help of computing.net experts, i have got my computer all cleaned up. Now there is no virus but the problem is still there. So the helper asked me re post the problem with networking experts and see if any of those could help me out of this problem.

Any sort of help would be greatly appreciated. Thanks in advance.

See More: Wifi network gets all messed up when I connect my laptop

Report •

March 28, 2015 at 06:51:00
From the sounds of it, you may have a bad network interface that is spewing packets out and swamping your LAN and choking off all the bandwidth.

You many need to do a packet capture on the laptop's interface to see what kind of traffic is coming out of it.

If you've only been connecting with one method (ie: wired or wireless) and have the other available on your laptop, try it and see if the issue repeats.

Let us know what you find out.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

Report •

March 28, 2015 at 07:02:50
Yes i've been connected wirelessly but i've also tried to connect using ethernet cable and issue remains there, no improvement.

"You may need to do a packet capture..."
How can i do that? Please elaborate. Thanks.

Report •

March 29, 2015 at 09:17:28
If you haven't already done so, go to "Control Panel > Network and Sharing Centre" then select "Change adapter settings". Double click the entry which is in use and hit the Diagnose button and see if that unearths anything.

Always pop back and let us know the outcome - thanks

Report •

Related Solutions

March 30, 2015 at 04:37:29
In the task manager > tab "Networking", do you see high activity on the adapter in use?
Also the Resource Monitor ( task manager tab "Performance") tab "Networking" will show the processes with network interaction. The one with high bitrate values are of interest.

Report •

Ask Question