Excel 2010 "Select destination and press ENTER" feature not working

When I copy a particular cell with text using ctrl+c , the marching ants(animated cell - dotted moving borders) feature does not get activated.It just shows for a fraction of second. Selecting another cell and pressing enter does nothing(as it should paste the text). But ctrl+v is working.

I have checked a lot in Excel Options on how to enable that feature.Can't find it yet   ! Googled a lot about it. Can't find an exact question like this.

This issue arose after connecting a projector to the laptop. Could it be due to some keyboard shortcut used for the projector which could have disabled the feature??

Please help   !!!!!