Uninstall Windows Pro 8.1 to reinstall original Windows 7 operating system, and then reinstall Windows Pro 8.1?

Here's a good. I want to uninstall my Windows 8 Pro upgrade, reinstall my original Windows 7 and then reinstall my Windows 8 Pro update. My product key will still work on Windows 8 Pro upgrade? My reason for this? I want to retrieve all of my software that came with my computer, when it was new. I have the disc, but also the keys. Also, if someone could walk me through the steps I sure would appreciate it. That is to say: "where should I start and how? Please, I beg you. I don't want to not update my Windows 8 Pro that is not my goal! My goal is to put back my original software on my computer that I lost (my ignorance) during the upgrade. All the software is on the recovery disk of I purchased from Acer. All I really need to know is if my product key for Windows 8 Pro that I bought in shop Windows will be valid. If someone can just answer, I would love!
Thank you

Hello

You don't need to uninstall anything... Just boot with the disk #1 you have purchased from Acer...

You may have you press a key at startup to start the process, but probably not...

You may also delete the partitions on the HARD disk with a bootable 3rd party program, but probably not...

The way these types of sets of discs work normally is that they write more everything on the HARD drive and restore it to its State 'as new '...

You should not have more problems with the upgrade process, you had the first time...

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