Wireless logging on and off, noise on external monitor

Hi
I got a new W510 3 weeks ago and allready from day 1 there was some problems.
The wireless would say it had internet but when you opened explorer it couldnt open the pages. Then after a windows repair network for the 3rd time it seemed to work...
But now it works sometime but when i need to load a new page it just hangs, and need to wait 20 sec. until it reacts and opens the site. I have a 5 year old laptop which doesnt hang on the same router... I have allready turned off everything about battery saving stuff for the wireless card. What else can i do?
Then when i attach the computer to a external 21,5" Samsung LED monitor there is huge amount of noise. And when i attach the monitor to my old laptop there isnt any. I have tried to use ground for the power supply and didnt work. The problem is both at battery and when i have the power supply plugged in. The monitor have VGA plug so there are not any converters...
What should i do?

Hi
I got a new W510 3 weeks ago and allready from day 1 there was some problems.
The wireless would say it had internet but when you opened explorer it couldnt open the pages. Then after a windows repair network for the 3rd time it seemed to work...
But now it works sometime but when i need to load a new page it just hangs, and need to wait 20 sec. until it reacts and opens the site. I have a 5 year old laptop which doesnt hang on the same router... I have allready turned off everything about battery saving stuff for the wireless card. What else can i do?
Then when i attach the computer to a external 21,5" Samsung LED monitor there is huge amount of noise. And when i attach the monitor to my old laptop there isnt any. I have tried to use ground for the power supply and didnt work. The problem is both at battery and when i have the power supply plugged in. The monitor have VGA plug so there are not any converters...
What should i do?

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