I have just fitted a new mainboard to my system & now there is an unusual problem. The keyboard works just fine when websurfing etc.. or other things none game related. I say none game related as when i launch a game, any game even if i am not using the keyboard, the keyboard stops working. The mouse & pc are still functioning ok. What happens is that i get a single beep from the case speaker & the keyboard quits working. All drivers are upto date & there are no conflicts in device manager etc. No overheating problems either. I get the same beep if i unplug the keyboard whils it is still working. As it is the case speaker that beeps could it be a mainboard error possibly. It is connected to the PS2 port but i am going to buy a PS to USB converter & plug it in a USB port ( yes my mainboard does support USB keyboard) to see if this works Does the fact that there is no tin plate that slots in the tower case & makes contact on the mainboard in/out connectors make any difference as there is not one fitted. Phil.