D08 and D09 pins on the Ramps 1.4 don't work!

I have a prusa i3 based 3d printer. I solved many problems and it runs good. the only problem is here, the D8 and D9 pins don't work! It means I have no heated bed and can't use D09 for cooling fan for the boards!

How can I fix that?

Also I have another question and don't like to creat another topic:
What do should I do after finishing the print? I tested a print and after printing extruder went to front corner. Can I shut down printer as soon as the print completed? or I must do some other things to prevent clogging the nozzle and etc! (sorry if this is a stupid question)

Did you connect the powersupply to all 4 terminals of the green Ramps-plug?
Is the bigger polyfuse OK? (The lightbrown squares behind the plug)

To manage your printers behaviour, check and modify the start/end-gcode section of your slicer.

I let the printer run as long as the extruder temp is above 80°C.