my speaker were working and then they werent did this b4.so I hooked up my headphones same thing work for a couple days then nothin when i test my headphone they work and i can hear them when restarting.the system sound work can hear them when adjusting the headphone volume.but cant hear browser volume on any of the sites I visit?? please help??any responses can be directed at oattseric@yahoo?? thank you.