monitor not desplaying

Hey guys so I was playing games on my pc recently then out of nowhere everything froze and I went to shutoff my pc then when I went to boot it back up a red light came from inside my case so I opened it and saw that the dram light was lighting up upon boot so I then I tried removing my ram and...

I had this problem about 4 days ago, I cleaned my pc then started it up, it was working fine for about ten minutes then it froze and then I restarted it, the pc started up fine all the lights and fans are running but my monitor, mouse and keyboard arnt working anymore, so I bought a new...