what laptop is it?
She says the fn button isn't stuck down and now the laptop is going into sleep mode when she presses the caps lock, a, s and d keys, any ideas ?
she hasn't spilt things on the keyboard has she or broken it in anyway?
if she presses any other key's does any other "wierd" things happen?
If she holds down fn and presses S - what happen's?
same here, google isn't to helpful tonight
I know this sounds cliche, but switch the laptop off for a few minutes and the boot it back up and see if this fault clears. (presumming this has ony just occured)
I shall have an ask in work to see if we know why this would happen (I work for an IT service desk but have not come across this issue before with the laptops that are used)