I got a used hard drive from eBay at,I think £25...new are about £40 + ...the used hard drive I had was fine...it`s also easy enough to put it in yourself...there are loads of videos on youtube of how to do this...just take care if you do it yourself.
If you have only had this computer since Christmas than Acer should fix under their warranty but good luck with that. Because of their technicians I had the same problem but I had to pay someone locally to fix because I could not get the company to send me the needed address label to ship to their repair center.
Member RevoMaxx is quickly moving up the ranks of Acer Community. He joined us in September and is already making a difference. It's great to see new members like him make a difference only after a few months. Thanks RevoMaxx!