crackling noise then pc shuts down

anti1460

Honorable
Feb 9, 2014
24
0
10,520
about once a day i get a crackling noise coming from my headphones and then immediately after my computer shuts down (well my monitors go black and no matter what i press nothing happens so i have to hard restart my pc). my tower led lights stay on though. i have no idea what is going on, does anyone know and could tell me what i need to do to fix it?

Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130828-1532)
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: Studio XPS 8000
BIOS: Default System BIOS
Processor: Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz (8 CPUs), ~2.8GHz
Memory: 8192MB RAM
Available OS Memory: 8184MB RAM
Page File: 2382MB used, 13981MB available
NVIDIA GeForce GTX 760
Tower: Antec Nine Hundred Tower