Main causes for Windows 10 camera error are:
There are an increasing number of users complaining about the problems and issues related to Windows 10 camera app. Just like many other parts of a Windows 10 computer, the camera app is not perfect. More and more people are talking about the webcam error, so it’s necessary to provide methods for solving camera error on Windows 10. Once there is trouble with your Windows 10 camera driver, the communication will be interrupted. My husband said that he's only had this happen since coming to the UK (we're expatriated here for a few years) please note that he has an American computer and I have a 'UK' Vaio as well, so I don't think it depends on that.The webcam driver is actually a program giving support to the communication between webcam and the PC. Unplug your power cord while the computer is off.
Then my husband suggested the most ridiculous thing ever: Tried everything I could rationally think of-drivers, etc. Device manager DID list an unknown USB though, much like the OP. Thinking it was a Gchat issue, I uninstalled an reinstalled flash, java, and gtalk plugin. I noticed this because I could not gchat on video. My Vaio webcam stopped working out of the blue. I don't think the OP's issue had so much to do with the Arcsoft software, considering my issue did not. I dislike necro'ing threads, but I hate to think of other people having a similar issue, being told to get a new motherboard, and then do it when this can be fixed. Is a restore to factory settings the only option and would it work? It seems I have uninstalled the drivers and now the camera has malfunctioned and the system doesn't recognise it so it can't connect to a new driver. System restore is not an option as I discovered it wasn't switched on so I can only restore from today. I've also reinstalled the arcsoft software however it can't detect a camera. I tried to install camera drivers from the Sony website, however on trying to install a message pops up advising that 'no camera is detected' and the driver installation is cancelled. In device manager no image devices are listed however there is an 'unknown' under USB (usb/vid)- I have disabled and re-enabled but I still get an error message when I reboot - a USB has malfunctioned: no drivers installed. I uninstalled the arcsoft software that came with the laptop in error last week, however now my webcam cannot be detected. I have a Sony Vaio VPCW11S1E/T with a built in motion-eye webcam, with windows XP.