My problem is that when I turn it on, it's not going beyond the Dell Splash Screen. In other words, the screen that appears straight away with the Dell Logo on it.
My BIOS isn't set to boot from CD - this I know now
PC isn't picking up my keyboard so I can't access the BIOS or the boot menu.
I don't have any weird and wonderful peripherals plugged into the PC. All the cables seem to be OK.