Guys, I just want to share this information with you all because I was desperate for a solution and luckily found the solution, which worked for me.
My audio used to break up a lot and system used to freeze or restart when playing games. Therefore, I updated the BIOS, which in turn gave me one more problem; I could not access the BIOS anymore. So, I started searching on the net and came across a solution, which solved all my problems in one go.
Solution: You will find a yellow socket (Audio socket) at a corner near the three white slots. If you find a cable plugged in it, simply remove it and tie it with other wires neatly; dont let it hang anywhere. This will solve all your problems. There is link attached for a more detailed description.