I think I fried my Nano

I have 3 nano's and I believe I shorted one of them out. I try downloading code and I get an error:

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x45

the hex value is sometimes different and I'm not sure why. I've tried uploading a blank file and still nothing. I know its not a driver issue or anything like that because my other 2 nano's work perfectly fine.

If anyone could offer some insight or some help that would be awesome!

I am not disputing your physical damage possibility, but those errors can also happen with a corrupted boot loader. Have you tried reflashing a boot?