![]() ![]() It still worked when I logged on (it had to, I used it to enter my password). With the same result: suddenly either "unknown" or "can't find a driver". "forgets" all about some USB devices that have always worked fine before, It's unknown hardware or says it can't find a driver for it.Ī second symptom that must have started at the same time is that it USB ports are fine, it reads the device descriptors but then either says USB Composite Device is used to wrap up multiple child Devices in a single parent Device, such as two USB Human Interface Device endpoints (One for keyboard, one for mouse) like the Logitech Unifying Receiver does.īig thanks to lucvdv of for figuring it out: Some time ago, my system stopped recognizing some, but not all USB devices. My microsoft wired keyboard 600 and logitech V220 are also not affected, as they are not 'USB Composite Device', but 'USB Human Interface Device'. My Android tablet is also affected, as well as my Microsoft Xbox 360 USB Controller receiver, since it has two 360 pads sync'd to it, but my wired PowerA Minix360 is not affected. ![]() This seems to have affected not just logitech unifying receivers, but all USB Composite Devices. I copied it over from my netbook and an 'Update Drivers' later, had my logitech k400 wireless keyboard working again. tib file.īoth the source system and the target system were apparently missing C:\windows\inf\usb.inf afterwards. I'm pretty sure I ran into this problem after Acronis Backup
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