"Very common to see computer companies give you a 2 year repair warranty but what happens after that they are no longer responsible shouldn't there be some sort of help for consumers?"
My point of view would be that who ever sold you the motherboard would need to take up the warranty claim with the distributor directly who would take it up eventually with the manufacturer. It seems that maybe you are trying to circumvent the supply chain and claim warranty on the Asus product via Asus directly, this may not be within their contractual obligations.
Asus would not honor the warranty in this way as they hold a contract with the distributor that supplied the reseller that sold you the motherboard the goods in relation to warranty returns. You must return the unit to the reseller who returns the unit to the distributor who would then be able to claim on the warranty for that specific purchase from the manufacturer.
They can be really finicky about the way things are returned too, do you have the box, all parts that came with it, invoice, etc? If yes then there is no reason why you cannot claim on a 3 year warranty if the product was purchased before the date that the warranty expires. If no then there is no reason why they will not do the warranty claim and should some bits be lacking then they must replace the product less those parts or refund you less the cost of the missing parts. That is pretty much what the CPA says if i am not mistaken.
Either way, in order to get something done you must follow the supply chain correctly, if you have a faulty Samsung phone, do you return it to Samsung? No... You return to Vodacom, etc. They more than likely bought the phone from a distributor or Samsung directly and in the contract for the supply of the phones they are responsible for providing the end user with a way to initiate warranty claims. Same can be said for X Online Store, or Makro...
Worst case scenario, you get the money you paid for the thing back. Okay way, being real... Real worst case is that they say god broke it, sorry for your loss...
NB: In some cases your warranty is held directly with the product manufacturer, your point of return would still be the outlet that sold you the goods, not the repair center that deals with your area... As the end user that should be none of your business, hassle free? Shame man...
PS: Last week i returned a dead Biostar motherboard that was 2 and a half years old, got money back as they no longer sell the product in SA; start to finish almost 3 weeks.
My 2c, cheers!