computer drops internet on wifi

OS: windows 7
Brandell
Make:laptop
Model: N5050

Problem:
when on WiFi connection the internet connectivity drops out.
when on Ethernet connection the internet does not drop out.

usually disconnecting and reconnecting to the WiFi network the problem is usually temporally fixes the problem. I get many different errors when I try to solve network connection

for example:http://i.imgur.com/vr6YqQp.png

sometimes the solve works, other times... not so much

I have tried changing the DNS, which didn't seem to change anything.
i have tried pingingthings while this occurs, localhost goes through(as it should), Google/yahoo/YouTube/duckduckgo does not

 

I have tried updating the driver before. I happen to have a spare "dongle" so I will try that while having the one in the laptop tuned off

 

Update:

it happens less.
a lot less.
but it is still there.

 

Do you have any other software "assistants" other than Windows Wireless Zero making the wireless connection?

What is the make/model of your current wireless card?

When was the most recent malware scan, and what A/V suite/scanner do/did you use?

 

what do you mean by assistants?

dell wireless 1703 802.11b/g/n(2.4GHz)

about a day or 2 before OP. Mbam.

 

By assistant, I mean a Dell wireless software suite.

Have you uninstalled, and reinstalled the WiFi card? Have you used a command prompt to flush the DNS?