Hello,
As I understand the law (Sale of Goods & Services Act), you are entitled to a replacement or repaired machine, in the absence of a full refund. If this is the first time you've returned the machine to them, it would probably be most appropriate to permit them the opportunity to repair or replace it, rather than an immediate refund.
However ...
A) your issue is with the retailer, not the manufacturer, given it's the retailer who you purchased the item from & hence, you've contracted with them.
B) if you are being asked to wait an unreasonable period of time for the repair to take place, then you can insist on a faster turnaround, or a replacement item - particularly, given the machine is so new.
C) if this is a problem which you've already given them the opportunity to repair, then you'd be well within your rights to insist on a replacement machine, if not a cash refund - tell them you've lost confidence in the machine and find it unreliable etc.
Ultimately, you have the law on your side but in practice, most retailers would not drag their heels too much once you start reminding them of your legal rights and also, that your contract is with them as they are the retailer etc.
I'd suggest if your not happy, you go to the store on a Saturday at a busy time and insist on speaking with the manager of the store - out in the open floor near the queue for the cash registers, where customers can hear you tell how unhappy you are, if you feel your not being treated fairly - it's far faster than going to the Small Claims Court and usually gets results
Have a look at the following link, for further information:
[broken link removed]
Finally, as a complete aside - I own an Asus Tablet (Transformer) myself and consider the machine excellent. The manufacturer has a good reputation from all that I've read about them, so I'd expect they will sort your machine out, under the warrenty (although granted, thats not the matter at hand, at this time).
Don't back down ... know your rights and speak loudly, if your not getting satisfaction when you visit the store.
Also, don't be shy about telling them your intending to publish your experience with their store on the internet, here on AAM etc
Regards
Mr. Earl.