Acer Aspire 5315 Notebook "usb unknown" Questions

...Unknown Device" showing in the Device Manager under the USB section. The Properties describes them as USB controllers which are missing drivers. I have 3 USB ports, none of which currently work but ...

unknown usb device attached. i do not have any usb items plugged in. when i go to the device manager the page keeps flashing like i am hitting a refresh button or something and i can not uninstall the

USB webcam is missing after installing Vista. Right click "Computer", open Properties, open Device Manager on the left, find if there is an alert saying unknown device or sth, if there is the unknown,

...usb wireless adaptor, ect. Check your device manager for flags.. or unknown devices. If you have any of the above with Red X or Yellow flags, remove them. Reboot the unit. Check the device manager ...

...usb in it pops up unknown device. I have formatted and reinstalled more time than I wish to remember. Any Help? This happened to me before - I have an Acer Aspire 5100. I had to take it to Acer (it ...

...USB Device Not Recognized". It then proceeds to download drivers automatically as it should, but the drivers say that they are unknown. Any help or suggestions on this will be greatly appreciated. ...

...USB mouse and other devices are working fine. Am i missing some drivers? Are you getting any message like Found Unknown Hardware.... if yes please give me the log by Unknown Device Identifier Thanks ...

...USB ports, I get 4 exclamation marks in device driver and when I pulg in any device (printer, camera etc) it reports unknown device. My orbicam is also now not recognised anywhere at all including ...

...Unknown Device under the usb devices. I would guess the drivers are either not installed, or the wrong ones are installed.  Go to the Acer website and select your model and download the current ...