Why does water leak from above?

This is my second brand new machine. Worked well for 3 months then put away for 3 years (co-habitation). Now, when trying to prime it for further use, water leaks out of everywhere on the underside: all around the steam wand big hex bolt head, and around the brewing head, where it meets the metal underside. NO water comes out of the steam wand or from the centre of the brew head: it is as if there is some seal that has dried out and is now too small. This is the only part of the machine that you do not show/speak of in your excellent online guide. The steam wand is clean & clear. Any ideas about what's going on? Dying for a morning coffee at home . . . Thanks!

Joanie