Extruder hot end not so hot...

The hot end of my MakerGear Stepstruder won't heat up.

I just finished assembling my MakerGear Prusa Mendel kit. I loaded my RAMPS 1.4 up with Sprinter and then calibrated the steppers with Pronterface. But when I use Pronterface to turn the on the heat on the exturder, nothing happens. I can heat it up manually by hooking it up to a power supply, so it can heat up. I'm also using an ATX power supply.

Anyone know what could be wrong? RAMPS just isn't sending any power to the hot end, (I checked with a multimeter) and I'm out of ideas as to fix it.

Maybe a stupid question but have you selected the right board in the configuration.h file ?

The configuration file was correct, but the problem was about something equally silly. I had the extruder heat hooked up to D9 instead of D10. Those yellow and pink lines, so easy to get mixed up. RAMPS 1.4 Final Check Image

Glad you sorted it