I have found a problem with the Device Manager " Other Devices" 690LC that may be part or all of the problem with my keyboard and mouse intermittent performance. I also read in one thread that this driver does have some bearing on the USB's and it is when I insert a storage USB that the problem with the keyboard and mouse becomes really bad, however most of the time things work fine. I have deleted the driver from Device Manager and rebooted, but it keeps coming up with a yellow ! triangle. I have read quite a few threads on several forums and am having difficulty finding where to find and how to install a new 690LC driver . Any suggestions appreciated. Brian DJ