It sounds very similar to a problem I had with my computer when it wouldn't start up, did all that choose mode thing, turned out to be a virus in the hard drive and it had to be replaced costing about £150- also annoying since I lost all my memory! (you can recover memory but it costs about £120)
If it's still on warranty take it back to the shop and get it checked out. If it isn't go to a computer specialist (which is what we did). You could try ringing them up before hand to ask what they think it is.
Last edited by StarsOfCCTV; 11-04-2008 at 14:16.
Peter: So how many are there? Is it bad? Olivia: Did you eat? Peter: Yeah. Olivia: Well, that's unfortunate.