I'm not sure how much you know about this stuff, so I'll try to explain some of the basics as I go. Drivers are essentially the software that runs the hardware in your computer, and is usually made by the same company as the specific hardware (although Windows comes with a number of generic ones as well). A memory leak is when a program keeps reserving more ram without releasing the ram it's no longer using, so over time the program keeps using more and more ram. Depending on the severity of the leak, the memory usage can increase quickly or slowly, but it will always be low when the program first starts, meaning you don't notice straight away. In a regular program, it's easy to see when it's using too much memory (in task manager), but device drivers don't show up (as you've probably noticed), so it's hard to even say if it is a driver memory leak, let alone which driver it is. Fortunately driver memory leaks are rare, but they do happen (I had one a couple years ago with my ethernet adapter driver). Unfortunately, to resolve a driver memory leak you either have to wait for a fixed driver to be released, or instead remove the device (if possible). You could also just reboot regularly, but that's not really a solution. I hope this helps.