I am trying to start my wireless lan card in monitor mode but not able to do so. I am getting following output -->

PID Name
8552 dhclient
Process with PID 8552 (dhclient) is running on interface eth1

Interface Chipset Driver

eth1 Broadcom wl (monitor mode enabled)

when I try to check the monitor mode after this command its not set to monitor mode, its set on managed. I further dig down the case and found that I have Broadcom 4313 driver installed in my HP laptop under windows. When I further investigated I came to know that injection mode is not supported on my laptop.

Are my observations correct. And if not please guide me how to start monitor mode on my laptop.