hardware

Hello everyone, I have a desktop that is having a video problem, the system has 3 displays after the system is on for a min the screens on all monitors start to jump/ flicker then the 3 video shows the screen in split-screen the bottom of the screen shows at the top and the bottom of the screen...

Some time ago my pc started to crash. It goes to a black screen and sometimes a bzz sound can be heard. It seems to happen more if playing a game of after it just happened. But it also happens randomly. When this happes I can only reboot the pc with the tower button. I have checked window and...