Hi guys. I work with a sweet older woman who is just about blind. She needs her screen resolution turned up super-high and even then she still uses a magnifying glass to see the screen. We keep running into issues where she and her assistant keep changing the resolution and occasionally it will get set so low so that things are so big, it becomes impossible to navigate the computer. It is a laptop, so is there any sort of physical knob or switch device we can buy to plug into the laptop to adjust the screen resolution??