I have done extensive technical support for customers, troubleshooting personal computers for problems related to hardware and software. For example, if the computer user cannot power up, I first ensure that the power supply is connected to the desktop station. As another example, if the user tries to uninstall a program but receives the message 'This program is being used by another program', then they need to terminate all programs running in the background.'
I have revised your paragraph, Terry, but I do not think it adequately satisfies what the question is asking of you. 'Please describe your technical/PC support experience' is asking for the length of time and breadth of your experience. State how long you have been servicing PCs -- what kinds of hardware and software are you familiar with, and for what kinds of customers? For example: Can you rebuild systems? Are you familiar with Apple software? Linux? This is the kind of information that is being asked of you.