My boot and Sunroof wont open/close?

HI
this is my first time on this forum and in need of your help.
I have a 54 vauxhall Tigra twinport, yesterday I opened the roof and boot with no probs whatsoever. However today I opened the roof but couldn't open the boot when shopping. When I got home I found I cannot close the roof. When I attempt to open the boot there is nothing, no sound and the same for the roof. It's like there is no power, but my electric windows and central locking etc work!! please help, I don't want to find myself with a massive garage bill because I can't afford it. Thanks