Cracking/Popping sound in Windows 8.1

Hello friends,

From past few days, I am getting cracking sound in my system and no sound from speakers and mic jack(headphones).

I have installed Windows twice and updated drivers but problem is not solved.

Please find computer configuration:
ASUS P8Z77-M PRO | i5 3570k | Corsair Vengeance 4 GB x 4 |CM TPC 812 | SSD - Corsair ForceGT 120GB |
WD Black 1TB + Seagate 500GB

Please help.
Thanks