I wish I was tech savvy enough to know what to do here, but after hours of reading threads with similar questions and testing solutions.. well, here I am.
My computer was been working perfectly fine since I had it built in November 2012. Then roughly a month ago, I restarted it and it wouldn't load Windows. It just went to a black screen after the boot agent. I flipped the tower on its side, took a look around for any loose connections, and started it again. Tada, everything loaded as normal. Until the next week, when it did it again. This time it took a little while to get it back up and running, but something about starting the computer on its side seemed to make it work. This morning the comp restarted itself, and now it gets past the boot agent and then black screens, even on its side. I've tried everything that I've read as solutions thus far, and nothing seems to be working.
When it "magically" turned on in the past, it would load some Intel splash screen, then the boot agent, then windows. When it's failed to work, there has been no intel splash screen. It just goes to the boot agent, then black screens with no beeps.
The "Boot Device LED" light is on.
The USB ports have power.
The CD drive has power but doesn't load the Windows disc.
All fans are working.
All connectors and wires have been checked.
The processor heats up, and the cooling unit isn't too tight.
The RAM has been taken out and shuffled.
I removed the RAM and it turned on the RAM light in the MB. There were no beeps upon starting it (but it may not have an internal speaker? I'm a newbie at this stuff.)
I unhooked the HDD, and nothing changed.
I unhooked the video card, it turned the video card light on in the MB.
I removed the internet card, no change.
I ran the computer with nothing but the MB and PSU, video and ram lights were on.
Intel I7-3820 3.6 GHZ 10M LGA
4x 4GB DDR3 1600MHZ RAM
Asus P9X79 LE Intel X79 Motherboard
Thermaltake 750W PSU
EVGA Nvidia GeForce GTX 660 TI 2GB 16X PCI
Windows 7 Home
ok. get another pc, and burn a disk of some kind of linux build, Ubuntu would be my choice, its free and alot like windows yet its not. burn the ISO file to a cd, put it into the broken pc, and install it. now you have a backup OS. from their do what is needed to figure out the problem. this is only a temporary solution.
IF ubuntu, linux mint, debian, or anything else does not boot, then its probably hardware, i had a problem like that, better have a pro take a look at it at a shop or something.