When uploading the software for my graphics card on the computer that i just put together, it shut down without a warning screen or anything. There were not any pops, or bang inside the tower. But now the computer refuses to turn back on. I asked a few friends about it and i took the system completely apart again, and reassembled it. The same problem stilll occurs. The led light letting me know that there is power getting to the MOBO, and if i disconnect the CPU the computer will try to boot up for a second(fans, LEDs, CPU, Disk drive) but then will shut down after about one second. I feel like the problem is the power supply, but i am not entirely sure.