P55-UD2 usb keyboard/mouse issues

Gigabyte just released a bunch of new BIOS updates for their P55 boards. I have heard from someone with the UD3R that it fixed some USB issues they were having. Worth a shot for you.
If you have revision 1.0, the BIOS can be found here: http://www.gigabyte.us/Support/Motherboard/BIOS_Model.a...

Or if you have a newer revision 1.1, the BIOS is here: http://www.gigabyte.us/Support/Motherboard/BIOS_Model.a...

EDIT: I did a little more research. I would still advice updating your BIOS. However I also found that some motherboards just don't allow what you're trying to do. Some do, but not in all USB ports so you may have to try them all. Start with the ones on the back plate. Also, some suggest enabling the USB Legacy function. According to your manual this "Allows USB keyboard to be used in MS-DOS."

Conb123,

What other devices do you have currently plugged into your machine aside from your mouse and keyboard? Has Windows 7 attempted to install "new devices" if and when you have both your PS/2 keyboard and mouse and USB keyboard and mouse connected simultaneously?

Also, have you installed the latest chipset drivers for your motherboard?

Should you require additional assistance and feedback, Microsoft does have an official Windows 7 Support Forum located here http://tinyurl.com/9fhdl5 . It is supported by product specialists as well as engineers and support teams.

Jessica
Microsoft Windows Client Team