Hello, new poster here. I'm currently having an issue with internal equipment that I'd like to get diagnosed. So let me see if I can post everything I know about it, and two images to actually what my screen shows.

For about 3 months now, my computer has been freezing up on and off. Sometimes when I'm playing a video game(WoW, TF2), or sometimes right after I login into my username on the PC.

Well, on Thursday of last week, it lasted about 45 minutes tops, and then it started giving me screen freeze, with all kinds of little lines through it so I shut it down, and then tried to restart it multiple times, only for it to freeze up and look like this in these images posted. Image links are here: Screen Freeze 1 and Screen Freeze 2.

Now I can't even get the machine to start. It sounds like it's booting up, but no screen is being shown. Any ideas as to what it could be? Thanks.