Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Two questions on installation

31 Oct 2009   #1

Win 7
Two questions on installation

Trying to install the upgrade version of Win 7 64 bit Home Premium over the RC version of Win 7 Ultimate 32 bit.

The RC version was previously installed over a legal version of Vista 32 bit Ultimate (I think).

The first error I got was that I could not install a 64 bit upgrade over a 32 bit OS (the Win 7 RC).

I changed to the 32 bit disk and tried again. Now I get an error that I can't install the upgrade version of Home Premium over an installation of Win 7 RC Ultimate.

If I go to a clean install, my wife will hang me by my thumbs, attach electrical wires to sensitive parts of my body, turn on the juice and go for a long walk. I'd rather watch the Cleveland Browns play at football than be shocked by the wife, (though that's nearly a toss up).

1) Can't I install the upgrade version over win 7 RC if RC was installed over a legal copy of Vista?
2) Can't I install a lower version (home premium) over a legal higher end installation? (Ultimate)

Thanks everyone.....


My System SpecsSystem Spec
31 Oct 2009   #2

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit

When moving from 32 bit to 64 bit, you must do a clean install.

I think there are issues when downgrading from 32 bit ultimate to 32 bit home premium as well. Not positive about that and there may be a workaround?

My suggestion: protect your personal and most delicate gear and go for the clean install. Maybe lock wifey out of the house for a day or two while you reinstall applications.
My System SpecsSystem Spec
31 Oct 2009   #3

Windows 7 Ulti. x64

Have a look at this. Upgrade Install with Windows 7
look at the how too
Two questions on installation-upgrade-rc.jpg

My System SpecsSystem Spec


 Two questions on installation

Thread Tools

Similar help and support threads
Thread Forum
OEM Windows 7 Re-installation questions
I'm planning on reformatting my hard drive, and I needed some help before I ruin something. I have an OEM copy of windows 7, does this mean that I can not use the same product key if I'm reformatting my computer? I read that I can only use it on the same computer, but how will they know this is...
Backup and Restore
some questions about windows 7 installation
hi guys. 1- i heard that we can only install windows 7 in C Drive. is there a way to install it on another Drive like E? 2- again i heard that if we want both windows like 7 and xp on our system we should install xp if we do not know this information and we first install 7 and then xp...
Installation & Setup
Questions to use for help with Installation Issues
Welcome to Seven Forums. Have you looked at the informative Windows 7 installation tutorials? How to Do a Clean Installation with Windows 7 How to Do a Dual Boot Installation with Windows 7 and Vista How to Do a Dual Boot Installation with Windows 7 and XP
Installation & Setup
A few dumb questions about SSD installation
I have my new SSD physically installed and it shows in Windows 7 x64 Device Manager. It does not show in Windows Explorer. So now I have to create a partition and format the SSD. So I have to ask a dumb question as to how to do these steps? I see no way to do these steps in W7. Thanks in...
Hardware & Devices
Installation questions
Hey, Can I use a cd key from technet to activate windows 7 RTM or is each particular key linked to a specific file? Once i have the iso, can i choose which version of windows 7 i want to install? This is the iso file i have:...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 01:30.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App