Ok the BIOS is fine, I used a spare keyboard.. the pc seems to be seeing both drives in the raid array but. Separately, is there a fix for this or does this again mean a reinstall?
edit
once i got into the bios i saw that somehow the hdd configuration had simply been turned to ide
changed this, all fine
SO
why doesnt my G15 keyboard allow me to get into the bios? the extra keyboard i used was another basic USB dell one
thanks for all the help?