Thanks for your replies.
It is a MSi U130 netbook (Win 7).
My main PC, it just won't turn on. I saw a kind of blue spark and it just went 'night night'. I thought the electricity had gone at first, but it was only the PC. I have tried it in other mains sockets, but it just won't come on.
It's a pity because I have had him for years and almost regard him as a person!
Thanks. I will try the keyboard.
Cheers