The retailer is responsible for the laptop, and that is your first port of call, not Acer. If there is a definite fault, then you are within your rights to ask for a refund, repair or replacement, as the laptop would be deemed to have been faulty from the beginning, and well within the first six months from purchase, were your consumer rights are far stronger . It is not for the retailer to insist that you contact Acer to sort out the problem. These websites will help you decide on a more clearer plan of action click here click here
Acer repairs are conducted by a third party, and going on reports from various forums and media statements, it would appear that the aftercare facilities could be much better.Delays in returning a 'repaired' product seems to be one of the main issues.
You haven't mentioned the retailer, so in fairness, I would suggest that you have a word with them, all may turn out well and easy. If you have problems come back to this forum, or use the above links.