I really need some help with my desktop computer. My desktop pc wont start at all when i say it wont start i mean there is no power to it i guess i keep pressing the power button but nothing is happening i have no idea what the problem can be?? I was on my desktop pc like 20 minutes ago when i hear a weird noise coming from the fan i look down at fan and all of a sudden i see like a flash/spark and BAM! computer just shuts off? Can anyone please help me and tell me what might have happend?