Audio problem

[Arturikas]

Hello, im using

Windows 7 64bit
Motherboard Name Intel Whitesburg DP55WB
Realtek ALC888/1200 @ Intel Ibex Peak PCH - High Definition Audio Controller [B-2] PCI
Headphones steelseries syberia v2 - 3.5mm jack

this is integrated sound card

so my problem is, what not working balance. then I press test, the sound must come from left to right ear, but it comes from both always, even I do all volume on right ear it anyway plays on both sides.
Even I delete driver, on default win7 driver remains same problem.
I tried to use earbuds, another headphones still same.

now im thinking just buy sound card to solve problem

 

[Arturikas]

I solved, so problem was my razor black widow keyboard it has 3.5mm jacks, so my headphones plug dont stick full.
im so shocked how razor failed