Random BSOD, error 0x00000109

[Hastes]

It has occurred only once, while I was on the internet.

Note:
I have installed other RAM, but it worked fine until now. (got it from a other computer)
I tested the Ram for 8 passes with memtest86+ without any error.
The only strange thing is that windows RAM test won't go any further than 21%. I tested this for about 5 times with no result at all.

Any help is appreciated.

ps. sry for my bad english. I'm still learning

 

[axe0]

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