Does Antivirus have conflict with screen saver and/or power settings?

My desktop computer: DELL Inspiron 660
My operating system: Microsoft Windows 7 Home Premium Service Pack 1

Does Antivirus, which is part of CIS, have conflict with screen saver and/or power settings? I did not find any feature on Windows or Antivirus where scanning Antivirus can stop or block screen saver or power settings. Does screen saver or power settings disrupt scanning Antivirus? Should I temporarily turn off screen saver or power settings? Is there another choice? I wonder. ???

Any help will be greatly appreciated.

Thanks in advance,
mrerk