'dmesg |grep b43' - wifi hardware switch ON at boot:

[   13.953438] b43-pci-bridge 0000:30:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[   13.953563] b43-pci-bridge 0000:30:00.0: setting latency timer to 64
[   14.955510] b43-phy0: Broadcom 4311 WLAN found (core revision 13)
[   14.982337] Registered led device: b43-phy0::tx
[   14.982363] Registered led device: b43-phy0::rx
[   14.982426] Registered led device: b43-phy0::radio
[   25.737069] b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)
[   29.654061] b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10)

===========================================================================================================

'dmesg |grep b43' - wifi hardware switch OFF at boot:

*no output*

===========================================================================================================

'rfkill list' - wifi hardware switch ON at boot:

0: hp-wifi: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: hp-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
3: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

===========================================================================================================

'rfkill list' - wifi hardware switch OFF at boot:

0: hp-wifi: Wireless LAN
	Soft blocked: no
	Hard blocked: yes
1: hp-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: yes