Computer keeps turning off?

Question

What gives?

Answer 1

get a new one

Answer 2

Loose wires, not enough power in outlet, snake inside your tower.

Answer 3

Can you provide details?

When does it turn off?  What have you done recently?  Does it make any strange noises?  Are the fans running?  What operating-system do you have?  How old is it?  How long does it stay on before turning off?

It could be overheating, failing, or simpley going into power saver mode.

Answer 4

Overheating due to bad fan or a bad power supply and if the computer is a older one it could have a bad main board.