Wow, that's amazing service from MS. Would've been even cooler if they gave you a surface 2 instead..haha
I wonder how someone who bought their rt off of eBay would do this. As eBay doesn't give you a receipt with a bar code. Unless there's someway to get one. Now that I think about it, as long as you still covered under warranty, you good. As that is considered a hardware defect. Even if no receipt, they can cross reference the serial number to the one matched on warranty registration as long as you have your id also.