I have a brand new iMac (late 2012) that keeps losing its internet connection

I have a brand new iMac (late 2012) that keeps losing its internet connection - like every five minutes. I have had it for three weeks. During the first two weeks, it worked flawlessly. However, just as the refund period ended - it became desktop dead weight. Suggestions?

did u ever get a solution to this?  I have the same 2012 mines 27". It drops after sleep sometimes and can't find anything. Wifi. Connection to the Internet. I pull up network assistant it just gives me blank stares and restart everything. It doesn't even see the time machines and they are still there. I have it right now in full error and my iphones allowing me to see everything as connected and I'm posting here in the forum while my iMac cannot. Doesn't happen all the time. Not sure why it happens or what's goinng on with It. Works great and then sudden wifi failure to recognize.

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