[Please Help] Whats Problem ? Video card .. DVI cable...Drivers ?

[banama]

Sometimes my screen has stuck, i need press reset button. My video card msi 7850 Power Edition, Catalyst Version 12.10. i took photos, Please take a look at it. thank you very much

Board: MSI 970A-G46
Bios: Version 1B
VGA: MSI 7850 Power Edtion OC
PSU: Cooler master thunder 500W
CPU: AMD fx 8320
MEM: Ram Gskill Sniper 8GB (2x4) 1600
HDD: western digital 500gb green
OS: Windows 7 64bit Professional / Windows 8 64 bit Professional

Windows 7

Windows8

I tested with vga port (DVI-A) and i havent seen problem yet..
But got problem with DVI port ( dual link )
I tested 2 Monitors with same problem
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i think its not problem with DVI cable (dual link). cable works well until screen has been stuck. i Changed to input vga cable but screen didnt display anything and i put back DVI cable stuck screen display .... after i need press reset button, seems computer doesnt work correctly or video card :'(

Thanks for reading