GeePee

When my new laptop arrived about six weeks ago, I had two buttons on the
Start menu. The red 'Shut Down' button & the 'Lock' button which in turn
displayed a menu giving various options such as Sleep, Shut Down, Log Off,
Restart etc. A couple of weeks ago, the 'Lock' button's menu disappeared, or
rather became so small that I have great difficulty in accessing it (you need
a magnifying glass to see it).

I have tried changing the various Power options in Control panel but nothing
I do will restore the status quo.

Any help or suggestions would be appreciated. Thanks.