Have a Logitech Alto wireless keyboard/stand with microsoft wireless mouse. Just changed batteries(sytem still on -opps). mouse working fine but logiteck keyboard not. tried website etc and the" connect" button on keyboard, on stand, on keyboard and stand same time and no good. tried restarting etc. is there a laptop button to change from laptop keyboard to logiteck....any suggestions. has worked well untill i changed batteries on logy keyboard with system on...any suggestion...any advice from teck wizards appreciated