Just started happening recently. Happens across both my desktop and laptop (both 64 bit windows 7). Doesn't happen with any other mouse or USB device, just the one particular mouse. Really hoping the cord isn't damaged (but then why would it light up and connect at all?). Maybe it's a driver issue that I have on both computers?
It's my razer naga epic. It's over 2 years old. Hiding this to avoid bias since naga products are known to fail