Windows 9 release Date?

Hi,

I bought an additional copy of Window 7 in order to install it on my latest PC

(almost 1 year old meanwhile) that came pre-installed with Windows 8.1.

I found all the drivers except one. But I am very nervous about installing it.  

2 questions to you:

-if the PC you installed Windows 7 on, was a PC that came with Windows 8.1 pre-installed,

was it easy to install Windows 7? is there something very important that I should know? 

on internet some people seem to have had serious issues while trying to do that

-in order not to lose my warranty (3 years)(it was an expensive PC for my budget), 

the best would be to keep Windows 8.1, and to install Windows 7 somewhere "next to it" (dual boot)

I hate the flat look of Windows 8.1 and the fact that it opens everything in full screen

(on a 27" display with Hires, that's horrible). For many years I like working with several windows open next to each other at the same time (hence the 27" display). 

You are obviously using the 'modern' interface.  Just switch to booting into desktop mode and everything you did with Windows 7 you can do with Windows 8.1!  Think of the modern interface as a glorified start menu for use if you need it.

Thank you for the links.

I already had followed and applied those instructions from how to geek (Look an Feel Windows 7).

But still is not enough for me.

I will try that ClassicShell stuff.

That could be the solution for me, I really hope it.

One more thing

May Windows 9 be highly customizable!

I guess 90% of the computer users on earth are having Windows (I have no clue) and the rest are using Mac and Linux.

So Microsoft has a responsibility being the only company "determining" how Windows will be. 

One version cannot fit everybody, that's why it should be a very customizable version.

Imagine there would only be 3 sorts of houses. 

That would not be enough, unless they would be fully adaptable. 

So that everybody can "find shoes for his/her feet"