When the light is flashing on your monitor, that means that it is on (there is power to it) but no source is avaiable for the video. This means that there is a communication problem with your computer nd monitor. Check your blue monitor plug into your computer. or see if it is tightly fit into your moniotr. The communication error is most likely not the fault of you monitor. Thus, the blackness is caused by no signals being sent to the monitor. Thus, it will only remain black, or really just showing nothing, until somthing gives it a signal. I sound redundant, but I just want to put it as many ways as I can so if one sounds confusing, then maybe you will understand it another way I say things. Oh, and does the trying to fix you rcomputer part refer to the monitor problem or something else?