Download usb acer m3450 unknown device problem with pnp

SOURCE: Computer not recognizing any usb devices

Well, appears that your configuration can handle 4 GB of memory. I checked the Acer website for upgrades for your model, and nothing appears to jump out which could solve your problem. A few appear to be possibly helpful, but some are for XP, not Vista. Upgrading "launch manager" might be a good thing.

However, Belarc tells me that on my Acer 5630 i have listed under "Bus adapters" the following:
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27C8
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27C9
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27CA
Intel(R) 82801G (ICH7 Family) USB Universal Host Controller - 27CB
Intel(R) 82801G (ICH7 Family) USB2 Enhanced Host Controller - 27CC
And, under "other devices", i have a USB Root Hub (5x). Obviously, the two match. I go to device manager to check them out, finding them under 'univesal bus controllers", to see whether they are all working properly, and and they are. In addition, opening "system devices" reveals something called a "plug and play software device enumerator", and that checks out to be working fine as well. Check your equivalent out to see if you find a problem to fix. Hopefully you will. Let me know how things go.

Muntejaya Ginting

• 10422 Answers
• Posted on Feb 26, 2011

SOURCE: Acer Aspire in Windows 7 cant use USBs or Orbicam

Hello,
Please get the driver here : www.multi-cam.net/camera_downloads.html
www.nodevice.com/driver/category/Digital_Cameras.html
www.nodevice.com/driver/category/PC_Camera.html

Kind Regards, Jay__y76ye4d

SOURCE: pnpdeviceproblemcode 19

I would manually un-install, and then reboot so the system could re-install. Also do a complete system virus scan, just to be sure
that a bug isn't operating.

Testimonial: "Downloading all updates from Windows and Dell did not solve the problem, but uninstall and reboot did. On reboot it reinstalled itself by finding the drivers previously downloaded."

SOURCE: Acer Aspire 5820T Pc Notebook - Its not detecting the usb drivers. No usb ports work and neither does the Web Cam. Showing as 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 drivers from there and install.