CALLING ALL COMPUTER GEEKS

Hi thanks for stopping by. : )    I'm having trouble with my pc.  It turns on when I press the on button, has the blue light and makes a little noise but will not really turn on so I've been having to turn it on, then off manually, then on, then off.  Today I did this like 7 or 8 times then she finally took and was on.  It's getting worse and I have no clue whatsoever what could cause this.  Please help with all ideas or suggestions!  Thank you.  ~Sherry