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You can use the table below to identify the 3 digit code on the base plate with it's language. Please note that this is a comprehensive list of the Hewlett Packard codes, version of mobile devices may not be available in every listed form. hp Internal Regional Codes#AB0
Latin America (Spanish)
Hebrew Enabled (English)
South America (Spanish)
I had this problem after changing the batteries in Logitech Cordless Internet Pro Keyboard - Model Y-RAJ56A, very frustrating. I am using a KVM switch that only has PS2 outputs and one of the computers doesn't have PS2 connectors for both keyboard and mouse. This necessitated another mouse & receiver. Receiver will accept both mouse & keyboard but initial installation didn't include pairing the KB with the receiver, it picked it up from the KVM. When I changed the batteries in the keyboard I instinctively pushed the buttons to pair the receiver to the keyboard. Wrong move! Now the computer is receiving keyboard command from both the former 'mouse only' receiver & the KVM, creating ddoouubbllee letters. After pairing, they refused to be unpaired. Solution was to go to Control Panel, in Device Management and disable Wireless Keyboard. Now it only receives keystrokes from the KVM. Problem was solved.
Thanks! I fixed the problem by installing a USB mouse and using fn+f9. That unlocked the mouse so I could use the pointer leaving just the keyboard problem. I then tried reconnecting the wireless keyboard (by using the button on the receiver and under the keyboard) Hey Presto!!
If the mouse doesn't have a little door to open
on the bottom, then try this. Just behind the Left and Right keys where
your hand rests, apply firm pressure down on the cover and slide to the
rear. Some mouse manufactures have used this type of access to replace
Hope this helps. Bud
it sounds like the mouse needs repair but if you could get same mouse or another optical mouse and see if it does the same make sure the area you are using it on is clean and the sensor has direct contact with mouse the model of optical keyboard and mouse i use is a4 tec model the model youv'e got does not last as long the mouse lots of problems with the micro swich buttons after a while they go.
if same happens on new mouse then operating system needs re-installing.
hope this goes well