I need a new power cord for my HP TouchSmart 310 PC

[Napoleon4]

I believe my power cable is defective.  I have to unplug and plug in my computer 20 or more tries before the computer actually turns on and I get a Windows screen.  Otherwise the screen is black after touching the power button.  The power button is lit blue but nothing else.  Any suggestions?  I have taken it to Geeek Squad twice during the past two weeks.  It seems to turn on just fine there with the same power cable.  I bought a new surge protector just to make sure my old one wasn't faulty.  I have also plugged in the computer to outlets in various  rooms in the house because I thought that it might be an electrical problem on my end.  

[wb2001]

@Napoleon4,

The PSU on these units is a just like a laptop PSU. There are 2 parts, the power lead to the chassis molded into the power supply, and a detachable wall cord.  Which end do you believe is defective?  Have you tried unplugging the wall cord from the power supply, and then plugging it back into the supply VERY firmly?

Have you been unplugging that from the chassis? How often? 

[Napoleon4]

It appears that the cord is in one piece.  I unplug the computer from the electrical source as well as the back of the computer.  It appears that the part going into the computer is faulty or the port is faulty.  Sometimes after pressing the cord in or turning it I'm able to get my computer to power up.