My computer suddenly stopped recognizing UR44

It was ok until today. I turned on my PC and noticed that the power indictaor was flashing. So I reinstalled the driver but it remains the same. When I open ur44 at the devices menu, it’s said that the driver installation is required. I’ve reinstalled the driver a couple of times but it still doesn’t work. What may be the problem?

Thanks

what do you mean exactly?