Well, flashing the BIOS would be the first step. But, we need to get a wifi card to test it out, check and see if it did not burn out again. But that is not a feasible solution, best thing to do is take the laptop to a nearby service center and have them locate the root cause.
Hi,First I would just like to say my laptop is out of warranty. A while ago (around 5 months) my wireless card suddenly stopped working for no reason whatsoever. Since then I had been using a usb wifi dongle but I got sick of that so decided to find out what the problem was. All my drivers where up to date, I re-installed everything, no luck. Opened the laptop up to find the wireless card had burnt out. Ordered a new one from Amazon (It was legit, more expensive than ebay ones) Put the new one in everything worked fine, wireless back on as normal, now 3 days later, wireless randomly turned of again, smelled burning inside my laptop, opened it up and the new wireless card had burnt out again.any ideas on what this could be?  My friend thinks its the circuit, but I have no idea. I had defiantly connected everything properly as I have taken many laptops apart. The network card is: Model: 622ANHMWIntel Centrino Advanced N6200Everything else on the laptop works perfect. Thank you 
Dell XPS L501x Network Card keeps burning out