Sometimes when I wake up my computer and plug in the external monitor's cable, it hangs immediately. Sometimes when I try to sleep my computer it hangs immediately. The sleeping function is totally unpredictable. Sometimes the computer hangs immediately after I plug in the external monitor's calbe to my computer, sometimes it takes some minutes and after hangs. Sometimes the computer hangs immediately when I plug out the cables of the external monitor from my laptop, sometimes it takes some minutes and after hangs. Sometimes the computer freezing without any information, I just see that the mouse and keyboard not response, and the clock on the screen not move. Sometimes I see the windows blue screen with an error message: DRIVER_POWER_STATE_FAILURE My problem is, when I plug-in an external monitor via DisplayPort, the computer hangs randomly: Maybe it is important, that this notebook uses two video card (an Intel and an AMD) at the same time on the same screens and a program switch between two videocards when an application require more power as I know. I am using HP 840 G1 notebook with Windows 10 64bit and the latest HWINFO64 5.30.
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