(Code 28)”, so it is easy to deal with this error: you can try uninstalling and reinstalling the device driver at the beginning. You can conclude from “The drivers for this device are not installed. Method 1: Uninstall and Reinstall the Device Driver If you wonder “how do I fix error code 28”, keep reading. How to Fix the Drivers for This Device Are Not Installed Code 28? Thus, based on all the facts about this device manager error, this post will focus on how to fix the code 28 error which lead to the drivers for this device are not installed. In most cases, this could be due to outdated, missing or corrupted drivers. More importantly, this error is actually a driver problem, as you can see from the error message above. All of these can have a huge impact on your computer use. Worse, your computer may occasionally freeze for a short time, or Windows 10 may be slow to respond to a mouse or keyboard. Once this error appears on your computer, the USB device, Realtek HD audio, Video Controller or many other devices in device manager will show you that the drivers for this device are not installed. This error can also occur on a 32-bit or 64-bit version of Windows 7/8/10 on an Ethernet Controller or Bluetooth. Code error 28 is a device manager error code that mainly happens to video card, sound card or USB devices. The optional updates were: Intel - System, Intel Ports, Intel System, Intel System, ASUStek Computer inc system (the intel system drivers were a repeat.

Another driver that was not installed with the Chipset drivers at the ASUS website but was able to locate it was 'ASUS_AMDA00_ACPI_Win7Win8Win8_1-060114' that installed the 'unknown device', should anyone encounter this problem.

I'm not sure why I didn't go there to begin with but I didn't. I did take a snapshot of the optional updates, a habit I've always tried to do. I decided to check the ones I thought relevant, so I don't know which one actually solved the problem. Thanks for taking the time to respond: I did solve the problem of installing the PCI serial port for Windows 10 pro by installing 'optional' updates (I did not have this problem with installing Windows 7 pro).

Pci serial port driver free download