|It does seem to be a coincidence that this happened when you tried to reformat. I guess the question is, why did you do that? Was it because you were having problems like this?|
Anyway, it sounds as if your technician doesn't know his job. A replacement hard disk (assuming that is the problem) is much cheaper than a replacement laptop. Did he explain what he thought the problem was; did he test the hard disk in another computer and determine that the fault lay elsewhere? If so, he should have explained to you what the problem was rather than just telling you to dispose of the laptop. If not, that was silly advice.