The computer keyboard did not respond after the plug

Plug in the computer and then flashing light moment there is no response to the
for a keyboard is the same situation
software is not what the problem ah? Thank you.

landlord, hello!
please continue to add the following questions:
1, you mean to press the switch when the computer keyboard like the bright lights only.is not it?
2, after pressing the power switch on the display showing There are things you?
3, the host CPU fan, power supply fan normal to you?
4, has issued a warning sound of it?