USB Problem

[melteye]

If i have a single usb device connected (mouse) upon startup it works sporadically until it finally starts working... once a second usb device is plugged (keyboard) my mouse stops working an the keyboard works... and then they begin to alternate without both every working at the same time.

These devices are being connected directly to the back of the machine. Could this be a motherboard issue?

 

[Nenu]

It sounds like either your motherboard or mouse has a fault.
It could also be a power supply problem.
Try another mouse.