blue screen during video playback

hello
my PC:
Intel Core i5 3570 @ 3.40GHz
MB: ASUS P8Z77-M
2x4GB DDR3 Dual Channel @ 812.1 MHz G.Skill
ASUS 295 GTX
PSU: HuntKey APFC 700
Win7PRO 64Bit

so basically what is happening is that while i watch a movie, after like 15 min or so, sometimes
less sometimes bit more but its around the 15 min, my pc suddenly restarts with BSOD.


following this link: http://pcsupport.about.com/od/findby...list_0x121.htm
it says:
STOP error 0x124 means that a fatal hardware error has occurred. uses the error data that is provided by the Windows Hardware Error Architecture (WHEA). STOP code 0x00000124 may also display "WHEA_UNCORRECTABLE_ERROR" on the same STOP message.

while i have no issues at all with using applications, playing video games, watching youtube,
or any other use of the computer.