Hi There,
I am suspecting that its a Dell computer.
Quickset is an application from Dell which comes pre-installed with the computer. This application has system utilities like power management, diagnostics & settings etc.
To disable it you can use the System Configuration utility : http://www.ehow.com/how\_7346925\_disable-support-center-quick-set.html
Disclaimer: Disabling Quickset might result in losing certain functionality of the system like volume up and down, display brightness etc.
Let me know if this helps.
[If this post was helpful, please click "Yes" under "Was this helpful option ?" . If it helps in resolving your issue, click "Propose As Answer" or "Mark as Answer" button. By proposing/marking a post as Answered, or Helpful you help others find the answer faster.]