So i just built my pc and now it has stopped working. When i first turned it on i was getting graphics card driver errors (i assume) and my screen would go black and cut the audio. The power button on my case would cease to work so i would turn it off by turned off the power supply itself. I updated my drivers and it seemed to fix the problem, for a few days at least. Today, while gaming i had the same error (screen go black and audio cut, then have to shut down via the power supply), the difference is, this time, my computer wont turn on. When i hit the power button everything turns on, but the screen is just black (it is giving a signal to the monitor, just black screen). Not even the BIOS splash screen shows. What do you think the error is and how could i fix it?