I'm using Ubuntu 11.10 (dual booted with Windows 7) but I'm unable to access Internet wireless even though I can do so on Windows 7.

The output for rfkill list all is given below:

rfkill list all 
0: brcmwl-0: Wireless LAN   
Soft blocked: no    
Hard blocked: yes
1: hp-wifi: Wireless LAN    
Soft blocked: no    
Hard blocked: no

The output for sudo lshw -C network *-network DISABLED is:

   description: Wireless interface
   product: BCM4313 802.11b/g/n Wireless LAN Controller
   vendor: Broadcom Corporation
   physical id: 0
   bus info: pci@0000:02:00.0
   logical name: eth1
   version: 01
   serial: 11:11:11:11:11:11
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
   configuration: broadcast=yes driver=wl0 driverversion=5.100.82.38 latency=0 multicast=yes wireless=IEEE 802.11
   resources: irq:16 memory:c2500000-c2503fff   *-network
   description: Ethernet interface
   product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
   vendor: Realtek Semiconductor Co., Ltd.
   physical id: 0
   bus info: pci@0000:03:00.0
   logical name: eth0
   version: 05
   serial: 22:22:22:22:22:22
   size: 100Mbit/s
   capacity: 100Mbit/s
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
   configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8105e-1.fw latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
   resources: irq:42 ioport:3000(size=256) memory:c0404000-c0404fff memory:c0400000-c0403fff

• Broadcom STA wireless driver is installed, activated, and currently
  in use.
• My laptop is a HP-Pavilion-g6-1004tx.

• My hardware switch is on.

• Enable Wireless option is also disabled in network settings.