Power steering noise when turning steering wheel

When I purchased this car a few weeks ago, there was a noise coming from the engine bay immediately when I started it. It sounded like the power steering system. First, I checked all the fluids. The power steering fluid level was just above the min line. I removed 3.5 pints of power steering fluid and filled it between the min - max lines with the 3.5 pints oem Honda power steering fluid. Now, a few weeks later and the noise only occurs when I turn the steering wheel in either direction. There are a number of possibilities. I heard that these Honda's have a common problem with the o-rings needing to be replaced that can cause this as the o-rings were recalled with a new better rubber o-rings. I did not see any major leaks. Also, I noticed that only the passenger side radiator fan comes on and the driver side fan does not. What do you advise to diagnose and repair the noise?

M D