|First in the headline you wrote "I Switched On My Cpu".|
CPU stands for Central Processing Unit and means the core of your computer, which is places onto the mainboard of your computer.
Now your problem.
You get the beep sound, but how often did it beep?
What is the exact model of your computer?
What have you done at least, before this issue occured?
Click Here on HowTo ask good Question to get best Help
Let us know, if the problem is solved !!!