Thanks for the advice. I re-loaded windows as suggested then when I re-booted there was a dual boot option; either Windows XP or an unknown operating system. The windows XP worked fine so I tried the previous "unknown system" which restored the original software which came with the computer.
All went well except there were drivers missing for VGA, sound and bluetooth. The drivers for Sound and VGA I downloaded from Dell but the bluetooth drivers I had to find on the web as the bluetooth drivers on the Dell site for the Inspiron series were for Vista only.
All working okay now.
Edited by jennyandernie, 29 November 2008 - 03:30 AM.