This issue is caused when Microsoft Windows does not properly detect the chipset or videodisplay.
This page contains drivers for Optical Touch Screen manufactured by Quanta™. Please note we are carefully scanning all the content on our website for viruses and trojans. This and other Input Devices drivers we're hosting are 100% safe. Vendor: Quanta™ Device: Optical Touch Screen. The drivers stay, yes. But the devices do not (at least not visable in the device manager). The registry keeps track of devices and their device id# anytime something is connected/installed. Under WinOS normal mode, old devices shouldn't be showing in the device manager, that is not normal at all. For a listing of video card drivers, see our video card drivers page. Other PCI device that Windows cannot identify. If you tried the above two steps and your Windows Device Manager still contains an Unknown PCI device, likely the device cannot be identified.
Corrupt or missing motherboard or chipset drivers
Download QCT products driver, manual, firmware and update. And products Portfolios, case study, white paper and CCLs.,QCT (Quanta Cloud Technology). In Internet Explorer, click Tools, and then click Internet Options. On the Security tab, click the Trusted Sites icon. Click Sites and then add these website addresses one at a time to the list: You can only add one address at a time and you must click Add after each one.
Download and install the latest chipset and video card drivers. If you or someone you know built your computer, it came with the motherboard CD. This CD contains the chipset drivers. Otherwise, you can find drivers for all the major chipsets on our motherboard drivers page.
Corrupt or missing video card drivers
If installing the latest chipset or motherboard drivers doesn't resolve your issue, make sure you have the latest drivers installed for your video card. For a listing of video card drivers, see our video card drivers page.
Other PCI device that Windows cannot identify
If you tried the above two steps and your Windows Device Manager still contains an Unknown PCI device, likely the device cannot be identified.
If you that the device not being identified is installed, we suggest you obtain the latest drivers for that device. A listing of drivers is on our drivers page.
Quanta Input Devices Driver Updater
If you have recently finished installing or reinstalling Windows onto the computer and are getting the unknown PCI device, we suggest you manually identify the PCI device through the registry.
Additional information
Quanta Input Devices Driver
- See the PCI and drivers definition for further information and related links.