So yesterday I got some new computer parts for Christmas, everything but a GPU and a hard drive, because I had those already. So since it was my first build, and it was in a cheap and tiny case, it took a few hours. So I'm all excited to play games, use the PC etc. But then, it says no boot drive found, so I go and fiddle with the cables,and got that working. Load into windows, very excited. Then I go to display settings, on my way to see if the graphics card was showing up, and the video cuts out. After a few seconds it comes back. Then goes away and comes back a few more times, until I see the post screen(the screen with the red pyramid or whatever). I haven't been able to load into windows really anymore. Now it will be on the windows 10 loading screen, and after a little it'll go blank for 1 second, then come back, but the windows logo has disappeared, and it's just the dots. Sometimes, the screen will go blank and won't come back, other times the dots will freeze in place, and it will restart itself. Please help!