|How is a 16GB USB flash drive going to make his games run any better? You didn't list any system specs but you most likely need more system memory (RAM) & possibly a video card upgrade.|
"we plugged the flash drive in and tried to install it"
Install what? Flash drives are for storage. A new flash drive should be blank. All you should have to do is plug it in & wait for Windows to recognize it, then you can use it for storage.
We need more details. Make/model of the USB drive plus the system specs.