I have been given a Dell Optiplex GX620 from work.
For business reasons they have removed the hard drive.
I have tried to use a mini OS on a CD to start the computer without success - I believe that there are Dell specific files that the system needs before I can get to the bios, which would have been on the original HD that has been removed.
Getting and fitting a replacement SATA HD is okay for me.
Can anyone advise me about the Dell specific startup files I need, that is what to look for and where I could find them, to be able to view the bios and be able to make a start?
Mike, there are no BIOS files on the disk... I am a bit conserned when you say you tryed a mini OS without success... Without a hard drive you should be able to run a linux live OS without problems. I would try and download something from here http://livecdlist.com/
I like knopplix but they all should work for you.
when you download it it comes as a ISO file and you will need to use that file to burn to disk. do not just copy it to disk.
if you are able to run a linux live OS then you know that the computer works and it may be worth it to you to buy a HDD and windows to install on it.