[SOLVED] wireless hard block set for HP Pavilion

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http://ubuntuforums.org – I had wireless up and running for several months on a new laptop (HP Pavilion Entertainment PC). Suddenly, a week ago, the wireless came up disabled (and continues to come up disabled), and the "enable wireless" option in the NetworkManager Applet 0,8 is greyed out. I ran "rfkill list" (I found that while doing a google search for this problem), and "hard block" says "yes." Removing battery and power and hitting the boot-up button did not reset this. Neither did "sudo rfkill unblock 0" where "rfkill list" shows identifier 0 as " (HowTos)