Hi everybody ! 

I'm using a E520 and trying to reinstall an original copy(the one that came with the pc) windows xp disc ! but when I try and boot from cd it says "selected boot drive not available " I've changed the order around in bios so it goes    *onboard or usb CD-ROM drive 1st? But it still won't boot, pressed f12 gone to boot  and still won't do it?. 

Also as a last resort I did a clean bios and that didn't sort it either , checked for updates for bios installed then and still nothing!

this problem is really doing my head in i!  there must be somebody out there that has had this problem ?????

PLEASE  HELP. 

Cheers 

chris