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.
Our friend and comrade IronFly has reached his 10,000th post to our little Community. During the last 4 years he has helped countless Acer customers providing help, advice and answers. The Acer Community team feels honored to count you as our friend. Thanks IronFly!