External cd rom drive ?

Question

I HAVE AN ADVENT 7014 LAPTOP.BECAUSE OF MY LAZINESS IN SWITCHING IT OFF BY JUST PULLING OUT THE PLUG IT HAS EVENTUALLY CRASHED ON ME.I WOULD USE THE RECOVERY DISC BUT HAVING DROPPED SOMETHING ON THE KEYBOARD IN THE PAST THE CD ROM ** LONGER WORKS SO CAN**T USE THE DISC.WHAT I WANT TO K**W IS IF THERE IS AN EXTERNAL CD ROM I COULD PURCHASE TO PLUG INTO THE LAPTOP SO AS TO BE ABLE TO USE THE RECOVERY DISC?.