How do I fix a power window issue and a air conditioning issue?

If the rest of your power windows work, you don't need to look for a fuse. It isn't the problem for a single window failure. Check for power at the switch and motor. The master switch can cause failure, but the motor could also be faulty. For the air conditioning system, you'll need to check for system pressure first -- even if charged, it could be low. Following this, there are a number of things to check, like compressor function, electrical functionality for cycling of the compressor, checking the temperature control mechanisms.