Upgrade Win 7 Home Premium to Win 8 Pro - Acer Laptop

Hi,

I have an Acer aspire S3 Ultrabook Laptop (one of several laptops) and I am wanting to upgrade the os to win 8 pro.
I have the win 8 pro pack,which is a full version i think,it does not say it is an "upgrade". Am i still able to use this win 8 pro pack to upgrade?( i thought upgrade packs are in fact cheaper)

There is the windows upgrade anytime link which i used just now,but it said that the windows key is invalid.It is a brand new pack with a new key.

I have read instructions online that say i need to insert the disk.But i am wondering if all the acer software will be deleted on C drive,although the instructions say it will be kept intact,as it has the acer recovery software in control panel on it.
If the acer software is deleted how will i reinstall those? I am guessing that the win 8 pro disk will have all the right drivers??


thanks in advance

Do you have
* Windows 8 Pro
or
* Windows 8 Pro Pack
?

The Windows 8 Pro Pack is for people who already have Windows 8 Core (non-Pro) version and want to upgrade to Windows 8 Pro, but this can't be used to upgrade from Windows 7.

You need the Upgrade edition of Windows 8 or Windows 8 Pro - note that these may be cheaper in your local computer store than from Microsoft direct. Where I am, the Windows 8 Pro Upgrade was cheaper than the Windows 8 Upgrade (even though the Pro version is better) for most of this year so check the pricing before you buy.

Whatever you do, if there's an option to use the Acer Recovery software to make recovery disks, I would use it to make sure you have a way back to Windows 7 before trying to install Windows 8. Make sure you have a backup image of all your files too.

When upgrading from Windows 7 to Windows 8, you should be able to keep Windows 7 applications, although if you check the Acer website you may be able to download a set of the Acer software for Windows 8, if you did want to do a clean install.
http://www.eightforums.com/tutorials/2234-upgrade-install-windows-8-windows-8-1-a.html