Hi, I'm having a problem with my computer that's fairly new-ish. I built it about a month ago and I had a problem them which can be found here
http://www.reddit.com/r/buildapc/comments/1pxa0m/troubleshooting_black_screen_after_5_minutes_of/. Basically my computer screen would go black and my monitor would say "no display" and the stand by light would turn on. After being on for about 5 minutes without the screen going black the machine would work perfectly fine.
Now yesterday I moved back home for the holidays and brought my PC, everything was normal (i.e. worked fine if it was on for >5minutes) until it just randomly crashed while playing TF2. Afterburner was reporting normal temps while playing and when the screen when black I didn't feel any extreme heat coming out of the vents. I let it rest and turned it back on fine, launched tf2 and played for a few hours fine. I started watching some movies and the screen went black and the audio stopped in the middle of one so I just turned it off for the night.
Today I was having the computer crash on me constantly. I hit the reset CMOS button on the back of my mobo, still crashing. Reset my graphics card into the mobo, still crashing. Then I tried to refresh my PC with the Windows 8 disk and it said my HDD was locked. So I just hit the power off option in the recovery with the intent of just reinstating Windows and wiping my HDD. But now I get no output at all on the screen. It just stays in standby mode. My keyboard and mouse do not light up, but my fans are all spinning and lighting up. The code that's displaying is 62. I just tried to turn it back on with no luck so I figured I should get more input on what to do because I have no idea what the problem could be. I'm assuming it's the motherboard because the keyboard isn't lighting up, but again I have no idea. Any help would be greatly appreciated.
Thanks.
Edit: if I hit the boot to bios button on the mobo the keyboard and mouse light up and sometimes the bios menu opens, but it's cut out to black on me after a couple minutes.