JoJo
Had it been a keyboard Failure (I had one the other week) a new wired Microsoft Keyboard with no added functions keys can be purchased For 8 to 9 Pounds and it will last for years. Other good brands are IBM, Dell and Cherry All about the same price Buying tip Go to a small computer stre and have a pretend play on the keyboards before you buy and you can look at what type of plug arrangement it has either a Usb or a conventional PS2 connector
The Argos PC World people wont let you touch. is a case of look and buy (NO TOUCH can't sell that now it been touched thats spreading bugs!)