I have an HP dv6928us laptop which is installed with Windows Xp operating system. The laptop was working fine for all this years but now the laptop has started acting weirdly. Sometimes the laptop does not boot when the power button is pressed. Also when the computer boots, it will not give any sound output or will not detect any sound input. Sometimes the laptop reboots while working on something. I am not a computer savvy and hence need your help in solving the issue. Therefore if anybody else is facing similar Sound Problems in HP dv6928us then please share some information which might help me in solving the issue.