Greetings, Patrick, thanks for your quick reply and solution, you are really kindhearted and nice!
to your questions, before I updated the BIOS, the crush happens randomly when any usb device is plugged, not only the usb key from the banks, but also when galaxy s4 is plugged. the situation is more like this, when one usb key plugged in the usb port, it is recongized by the system, after finished with it, I plug another one and continue work with it and repeat once again till a random usb device is plugged, firstly MSE report error and skype, msn, yahoo messenger started to shut down automaticly and maybe 10 secs later, the screen stopped, and soon BSOD will appear.
after updating the bios to the newest version, the crush is not occured as often as it used to be, but if I repeat above actions for 15-20 times, BSOD will appear too.
I will follow up your advice and install the newest CMB bank components and see if it solved and also uninstall to test as well.
I will post the result here.
thanks again for your kindly help! if you have more questions about this, let me know and I will try best to explain. sorry for my bad English.