Did you check the bios for a switch? i've seen wifi enable/disable in bios before.

Date: Tue, 4 May 2010 17:22:54 -0500
From: james007wjs at gmail.com
To: tclug-list at mn-linux.org
Subject: [tclug-list] Wireless N card issues

I aquired an hp elitebook 6930p with a intel 5300 wireless card. Pulled the cmos battery to attempt to reset the bios password, but its written to the bios. I had put windows 7 on there and it asked me for my wireless pass during install. Installed updates and rebooted and now wifi is broken. Says its turned off, in both win7 and linux. The little wifi touch button doesnt change colors, but the other media buttons work for the most part. Thats about the only place i see to turn the wifi on and off. I tried messy with the settings and still no wifi. Tried installing both windows 7 and 9.10 again, still broken. I did put an older intel 5100 in there and it said it wasnt compatible. I even tried moving the card to the other mini pci slot, no joy doesnt seem to recongize that extra slot. I might try and put the 5300 in my asus laptop with a live cd and see if the card is dead. Im sorta stuck on where to go from here
 		 	   		  
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