The buttons light up and it's not a cable box problem because I just tried a neighbors remote and it works just fine. So maybe could my remote have been reset with so many codes Comcast had me enter and now my remote doesn't respond to my box?

I'm not sure which "reset" code to try because you have posted so many helpful codes for other people. But Comcast did have me try about 16 codes to get my remote to work, but it still isn't responding. But why would my neighbors remote work with mine?
Thank you!