There will be lots of computer consultants who will no doubt be prepared to write a report but.......... do you really want to go to court, and if so, what is it that you hope to gain? The last thing I want to do is deter you from a course of action if you've decided upon it, and of course you haven't asked for advice, but I'm going to offer some anyway.
Why don't you post back with some more information - including the name of the company from which you bought your computer. There are remedies available to you under current consumer legislation, and they might avert an expensive and possibly inconclusive court action.
Tell us what and when, and by whom, and we'll offer advice and possibly help.......then if you're still dissatisfied you can go to court. All you risk is the loss of a little time.