When I turn on my printer, wont either LCD screen or LED lights turn on. When I connect the printer to my PC, the PC registers it but MakerBot Desktop dosent. What could the problem be?
Thank you in advance for your help.

Does the power supply turn on? Any fans come on?

I fixed it, but nothing turned on. I send a mail to makerbot support, and they gave me a .zip file with a progrm that fixed the problem.