Keyboard problem

Hi,
I'm having problem with my keyboard, almost everytime I open my computer the problem on my keyboard appears. But not all the time.
When I troubleshoot, the problem is detected, but I need to reconnect my keyboard then run troubleshoot again. The troubleshoot will fix the problem by reinstalling the driver.

I don't know why it keeps having error when I turn off my computer.

Here are the samples of error that occured.

Sorry :)
Desktop
mobo: Asus p5vd2-mx

Samsung Pleomax KU-0512

btw, when the keyboard is not working properly, the shortcut buttons on the side of my keyboard is working like calculator, my documents, my computer..

have you tried a different keyboard, or tried the keyboard on another computer?

Actually the keyboard works properly after reinstalling the driver.
The problem is when I turn off my computer, it seems that the driver got errors when it is open again, but not all the time.
well I tried a keyboard which has a serial port, it works fine.

I'm still figuring out whats the problem.. I don't think the usb port on my mobo has a problem, because I can use other devices with usb port.

Or is the driver of my keyboard restore automatically when I turn off my computer? :)
Or the keyboard is not compatible? (but it works fine after reinstalling the driver via windows update)

Sticky/broken key on keyboard?

Try uninstalling/deleting the usb hub the keyboard is plugged into in device manager - then reinstall

I didn't get that.
Uninstall the keyboard on device manager, then reinstall? (is that what you mean?)

thanks for trying to help.

I've tried different usb port. I even used the extension usb port in front of the cpu. It's still the same. There will be a time that the problem appears.

Btw, I tried uninstalling the Keyboard on device manager. When I reconnect the keyboard, no installation happens but the keyboard works properly, I checked the device manager if there is errors but no errors.
I'm really confused on whats the problem.

edit: I have no other usb keyboard. sorry.