Windows 7: System wont start after connecting IDE dvd drive

Hi all,

I am totally stuck on trying to find a solution to my proplem.

I bought a used hp tower with twin xeon dual core processors a few months ago. It was a great machime but only has dvd rom.
I wanted to burn a disc but couldnt, so I tool my old ISE Dvd drive out of my old computer, bought new only about 1year ago.
I insterted it and a screen came up say that my system configuration had changed and press F1 to accept the changes.
I did this and then it faild to boot!!!

I have removed the dvd drive and tried again but the same, will not boot.

I then removed the original dvd drive and you guessed it, still wont boot.



I have run windows repair but nothing.

How can I get it to boot without reinstalling? I only have 1 hard drive (sata) and stupidly havent done a backup (doh!!)

Please help

Sorted it out, cheers guys.