Laptop looses internet connectivity when opening browser
Posted on 2012-08-15
I am working on a Dell latitude laptop with Windows 7. A few weeks ago, this laptop had it's home page hijacked as there was some sort of malware installed. I removed the malware (don't remember the name of it) and did numerous malware and anti-virus scans...all came up clean.
The problem is, when opening a browser page, the home page usually comes up fine and I can browse the internet for a few seconds (anywhere from 5-20 seconds). Then, the browser starts timing out and displaying the page cannot be displayed as I go to various web sites. After another random time, usually around 10-30 seconds, the browser starts working again and I can browse the internet. But then, after 5-20 seconds, the same thing happens.
I setup a continuous "ping" to a server here at my office and just watched it as I browsed the internet. What I found was, if I just have the laptop turned on and sitting there with NO browser open, the ping is consistent and never drops. Once I open a browser, the internet connectivity starts to drop in and out. If I close the browser, connectivity is consistently fine. I've tried both IE and I downloaded Firefox, and they both have the same behavior.
Not sure if it's related, but I am also getting DNS errors in my event log. There are numerous Event 1014 errors. It says "Name resolution for the name ....com timed out after none of the configured DNS servers responded". The dns domain name various.