Can you imaging my surprize and all the other feelings

that go through a person when their most beloved toy and link to the world just decides not to start this morning!!
Right now I am on my old computer (thank God I still have it!!)
Last night I shut down as normal, everything seemed just fine last night..then this morning it is almost like my start button is dead!! My monitor will turn on, if I flick the toggle switch in the back of the computer, I can see lights for a few seconds but nothing!!
I tried my START button on my keyboard which is microsoft, cordless..does any one know if possibly dead batteries would do this?? I just thought of that!!
Bummer and it is the weekend and I can't get any help with it for two days!!
Has this happened to anyone? I do not believe or at least hope not that it is hardware failure...I've never experienced anything like it before so I do not know what it is!!!
HELP PLEASE!!!!!!
