I am new here and I have a problem. Aren't we all have?

By the way it is a great board.
I found this site while researching and trying to figure out what is wrong with this computer.
You've all heard of it before. My story goes like this. I was surfing the internet. I went to get a pizza. I came back and thought my computer went to sleep mode. I tried to wake her up but to no avail. No video. The HDD light is lit up and the PSU fan is running. I tried to press and hold the switch button for about 120 sec and it...