You have two choices.
1. Reject the goods under the distance selling regulations. You do not have to give a reason why you are rejecting them, but you should ensure that communications with the vendor ae carried out via " a durable medium". I believe that emails are considered a durable medium.
You will probably be required to pay the costs of returning the goods, but you may not be charged a restocking fee.
for the full DSR.
2. And the more likely in this case.
REject the goods as faulty, and not fit for purpose. The vendor may try to direct you to Acer, but you contract is with the seller, NOT the manufacturer.
Keep copies of all correspondence.
FE will probably be along in a bit to add his comments. They are always spot on on what to do in these circumstances.
A couple of quick questions.
1. Who was the seller? This may help forum members with long memories who may remember similar situations with that seller.
2. Did you make the purchase as a private individual, or as a business purchase? This can make a huge difference to the legislation involved.
Oh, and good luck!