Hey everyone, I have a RUMBA board, which is based upon the RAMPS board, which is an ATMega2560 shield. I currently have a problem with it not being able to connect to my computer. I had a problem with it before but it was slightly different. Before when I connected it to my windows 10 PC, it simply said "Device not recognized." I was able to fix it by going into DFU mode and reinstalling the 16u2 firmware.
Now, when I plug into my PC nothing comes up, and the device manager doesnt even update. The RUMBA board's Rx and Tx lights don't flash. I also cant get it to go into DFU mode as it says on the wiki page RUMBA - RepRap
Any way to fix this for the 2560 or RUMBA?