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Part of the 15 series in Dell’s Inspiron notebook line, the 3520 model was released on October 18, 2012. The Dell Inspiron 3520 is a 15 inch laptop that is both affordable and capable of meeting a variety of needs.

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Wifi problems after bios update


I have a dell 3520: 6GB ram, 1TB hard drive, intel i5. A few months ago I had to update my bios... The problem became after I did it: At the very moment I started having issues with my wifi like it drops when I close the lid, and whenever I wake up the computer after it would take a looooooong time to wifi to start working, and actually, drivers disc won't detect the wifi card anymore. Moreover, the bluetooth doesn't work anymore. It doesn't shows up at all as installed in the devide manager.

I've been wondering if updating bios had something to do with it... So, I had thought to downgrade it to the previous version but then I came to find out that it is almost impossible (because I tried it and it was). So, any solutions to these?

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What i would do

Download the drivers from the manufacturers website using another device. Transfer using USB. Try to install and see what happens.


Find a cheap external wifi adapter and use that


Reinstall windows and see if it autodetects drivers

Hope one of these helps

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I've done that and it all stays the same!


even an external adapter?


Not with an external adapter. I tried installing the original so which was W8, then tried W7, and neither recognized wifi and bluetooth adapters. Actually, in order to make wifi work I had to search the driver in a weird czech page... Actually, bluetooth has never worked again since I made the bios update.


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jrgg1994 будет вечно благодарен.
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