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Re: wireless not working
Check the device manager (right click on my computer> go to properties> click hardware> click device manager) and look for any yellow "?" or "!" marks on the icons, if none are found, make sure that the laptops "Wifi switch" is enabled.
Many people do not know that their laptop has a wifi switch that can turn the antenna on and off and make it appear as if the wireless adapter is not working.
Sometimes this switch is on the side of the laptop somewhere sometimes it is whats called a "soft switch" where you press FN and one of the number keys at the same time, the key usually has a little radio wave icon on it somewhere. - This is most likely the cause of your problem.
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Replce the wifi card from another laptop (it should be working) and check it. If it is okay then the complaint is in the wifi card. If the problem still exist the south bridge or the input/output controller chip is faulty. Consult a chiplevel technician to replace the chip.
I had the same problem till one day when my computer completely went off on closing it it could not boot I googled somewhere on this forum and found out that the reason it could not boot was the graphics chip that had loosened i had it re-soldered and the next time i turned it on the wireless was working fine so my suggestion to you is that you have your chips re-soldered you never know... what may happen am happily working with my wireless card now
The wireless card is a pretty common replacement part, they can be replaced pretty easily. This is from HP, it explains how to rellace the wireless card, it is quite thorough, If you don't think you can do it then better to send it to them,http://h10025.www1.hp.com/ewfrf/wc/fastFaqLiteDocument?lc=es&dlc=en&cc=py&docname=c00273322