There's the rub. If a license agreement is to be valid, it must be voluntary. You can't impose conditions on a sale after the sale has taken place. The offer of a refund for those who refuse the license terms is the fig leaf of voluntary entrance into the agreement.
So what happens if you refuse the terms of the EULA for software that was bundled with your machine? The answer is to be found in the EULA itself:
[...] By installing, copying, downloading, accessing or otherwise using the SOFTWARE PRODUCT, you agree to be bound by the terms of this EULA. If you do not agree to the terms of this EULA, Manufacturer and Microsoft Licensing, Inc. ("MS") are unwilling to license the SOFTWARE PRODUCT to you. In such event, you may not use or copy the SOFTWARE PRODUCT, and you should promptly contact Manufacturer for instructions on return of the unused product(s) for a refund.
There it is. If you refuse to abide by the EULA, you must seek a refund.