I received a new Dell Vostro 1500 laptop for fixing the connectivity issue. It is owned by my teacher who purchase it just some week before. Now the issue is that he is not able to connect wifi network on it. It has a Dell Wireless 1505 Draft 802.11n WLAN Mini-Card inside. When the laptop is ON the icon on system tray about the connectivity just freezes on acquiring network address. But when connected the internet is very slow. Sometime the browser freezes and crashes. So I tried to check the router ping time. It showed me more than thousand. Sometime in between there is request timeout error or host not reachable but again after few minutes I can get regular ping. My wifi router is connected with 2mbps internet line. I use the same on my desktop via cable connection and it works smoothly. But on the wifi it does not work properly.
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