Fried Arduino Mega What do I do? (no replies)

Hi Everyone,

Today I tried to mount my ramps and arduino board onto my new control box. I screwed in two short m3 nuts to hold the board down. After I turned on the power supply I saw magic smoke. It smelled really really bad.
I unplugged everything and took off the ramps board. I saw that my voltage regulator on my arduino mega was fried. Do I just have to replace the mega? Or do I have to replace everything?

I connected the ramps to the arduino and powered the ramps board. Then I checked the voltage across the D8, D9 and D10 pins and they were all zero.

Thanks
Noah