Arduino timing out after working fine for a few months

I'm doing a project where i needed to extend the lengths of some of the wires by soldering. I wanted to test my new wires so i pulled up a code that worked before but it didn't work. So I made everything identical to my old setup and it just kept timing out even when i tried it on a new computer. Does anyone have any idea what the problem might be? All help is appreciated. :slight_smile:

Wrong com port selected?
Anything wired to pins 0 and 1; this is just a guess as you don't mention which board. Wiring diagram can be handy.

What is timing out? The upload or something in the code when it is running?