Mouse and TP 7.0 problems...

Hello, can anyone help out with this problem. I have Turbo Pascal 7.0,
when I start it from either DOS or WINDOWS , the mouse works fine,
but as soon as I compile or run anything, the mouse 'cursor' disappears,
although it still works if I 'guess' where the cursor is at any particular

Anyone else had this problem, or have any ideas on how to fix it?

Many thanks,