Audio USB Devices showing under Other Devices in Device Manager

Hi!

I have two USB audio devices that I cannot seem to properly install drivers for.
Focusrite Scarlett 2i2 & KORG MicroKONTROL

I am in communication with both product tech support teams but so far they have not offered a successful solution. As the same issue is occurring with multiple devices I thought it might be an OS issue.
I run Win 7 Home Premium x64

The problem is as follows:

The product drivers install correctly without error. However, instead of showing up in the Device Manager in either USB Controllers or Sound Controllers they both show in Other Devices with a yellow exclamation mark.
I have tried the following fix from this site (USB Driver - General Fix for Problems) and this actually enabled me to access a portable HDD that wasn't working, but it didn't fix the issue for my 2 audio devices.
I have also tried right clicking on the devices in Other Devices, selecting Driver Update. I then find the correct drivers listed but when I hit install I get the following error message on both:
"Windows found driver software for your device but encountered an error while attempting to install it. One of the installers for this device cannot perform the installation at this time."

Any suggestions would be greatly appreciated.

Could it be the two devices are competing with each other and the driver installer gets confused? Details on the devices and the needs to use two of the same type probably would be helpful.

Hi Berton,

Thanks for your response.
Sorry, maybe I should have been more clear. Neither devices works, whether plugged in singularly or simultaneously, so while they may be competing it doesn't explain why neither work at all.
Both drivers are the manufacturer's latest drivers and they install (apparently) perfectly so it shouldn't be the drivers for the hardware. Suspect it is an OS problem.
Also - both devices work on other computers, unfortunately just not mine
Any ideas would be greatly appreciated.

Hi Carwiz,

Thanks for your reply.

Neither device is "plug & play" and so both required me to download and install the drivers manually before plugging in the hardware...