Drop the exact error message in the comments below and your webcam model (e.g., "C310"), and I’ll help you debug it.
If your 720p video looks like 240p, the driver resolution settings may be mismatched. logitech 720p driver
Before you click away in frustration, that is actually good news . It means the solution is faster and easier than hunting down old setup files on a sketchy website. Drop the exact error message in the comments
Here’s the short answer: