Clean install of windows 10 = to preloaded OS on a new unit

if you purchase it with windows 8.1 - once you get it - Create a recovery drive..
this will save your factory windows 8.1 setup to USB or DVD.. just in case you needed it later..
Upgrade your factory win8.1 to win10 via the ISO upgrade method and get windows 10 activation..
You have now upgraded your factory 8.1 bloatware to windows 10..
Create a backup image of your win10 upgraded bloatware using marcium reflect > http://www.macrium.com/reflectfree.aspx?x-ca=blog

Now you can clean install win8.1 or windows 10 and do away with all the factory bloatware,
but you will have both windows 8.1 factory and windows 10 factory images..

You get two OS's for the price of one..

But, if you wait for Windows 10 via OEM > OEM windows 10 does not include downgrade rights.. you only get one OS

+1 What Kyhi said....

Johannes said:

Thank you for the quick reply.
I would have no interest in Windows 8.1 and would get the store install the/update the Windows 10. I am just concerned that it would leave crap ware from 8.1 At present I have Vista premium. thus I am not familiar with the 8.1 anyway.

After the upgrade from 8.1 factory to Windows 10, then you can do a clean install of Windows 10 - select custom install, delete all the partitions on the hard drive and let Windows 10 install take care of the rest. When you delete all the partitions on the hard drive at the beginning of the install - you won't get any trace of Windows 8.1 left - except for the product key stored in bios.

In fact, it would probably be easier to get a 100% vanilla install of Windows 10 coming from an 8.1 factory computer than it would be from a Windows 10 factory computer.

If you'd prefer to save yourself some time and skip having to upgrade, activate, wipe then reinstall in order to get a clean Windows 10 installation, google "How to upgrade from W7/8.1 without to go through the upgrade process itself with ease" (yes, with the grammatical error!)

It was originally posted at MDL I believe, but has since been reposted elsewhere. Following the instructions should allow you to skip the "upgrade" step and still have a fully genuine, activated clean install of Windows 10.

Johannes said:

Thank you all for the replies. Since I am inept at doing these procedures, I shall ask the "Geek squad" from Bestbuy store people to do it for me.

I would be willing to bet that most of us on this forum would agree that is about the worst option you could pick. Think of it this way... nearly 100 million computers have been successfully upgraded to Windows 10 by owners just like you. We here on this forum can and are willing to walk you through step by step what you need to do to get exactly what you want.