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: help needed, tried to upgrade from 32bit win7 to 64bit (doh)

14 May 2012   #1

windows 7 64bit home premium
 
 
help needed, tried to upgrade from 32bit win7 to 64bit (doh)

I know now that it cant be done.
Anyway this is where Im at. I got a new machine at Christmas, it has a TB hard drive, intel 3 processor, 8g video card, cant remember what else and I cant get into it to tell you but its is definitely able to run the 64 bit version of Windows 7. It came without an OS and as I already had a guenuine copy of Windows 7 that was fine. However, being a bit of a noob I loaded the 32 bit version and not the 64 bit version.

Today I decided to load the 64 bit version. yes, i now know that it cant be done as a simple upgrade. (im kicking myself)
It started to load....but now it is stuck at a command prompt screen. If i reboot i just get the command prompt screen. If i try to go back to loading from the windows vista disk all i get is the command prompt screen. I can open the registry, and it looks like the previous 32bit version has been cleared, but the 64 bit version has not loaded. I think it has cleared the 32bit version but not loaded the 64bit version.

I did think of just formatting the c drive but i cant remember the name of the partitions, The C drive was partitioned to have windows on one and my data on the other. I dont mind formatting because i backed up most stuff i would have needed....just have to download drivers again for the Graphic card....or just a horrible thought.. would i need drivers for the motherboard and other hardware??

Basically I am stuck and my beautiful gaming machine is flooked :

My System SpecsSystem Spec
14 May 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

If all of your data is backed up, you should be able to boot from the Windows 7 disk, wipe all partitions, and reinstall Windows to a single C partition. Make sure only one hard drive is connected when you start.

But first a few questions:

You mention the PC came with no OS and then you mention Vista. What does Vista have to do with this? I assume you want Windows 7, not Vista.

Do you have a valid 25 character Windows 7 Product Key?

Is your Windows 7 installation disc a retail version?

Is it a full version or an upgrade version?

Have you set the BIOS to boot from the DVD drive first?
My System SpecsSystem Spec
14 May 2012   #3
Arc

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1
 
 

To upgrade from 32 bit to 64 bit, you need to perform a Clean Install Windows 7 with the 64 bit version.

Here is some more and important info : Clean Reinstall - Factory OEM Windows 7

Edit: you need to format not only the C drive, but also the 100 MB system reserved partition, too. Then follow the installation process, it will guide you accordingly.
My System SpecsSystem Spec
.


14 May 2012   #4
Microsoft MVP

 

Are you aware that you need to boot the installer to clean install an OS?

Follow the steps given here to get a perfect Clean Reinstall - Factory OEM Windows 7.

Be sure to delete all partitions during Custom install at the Drive selection screen, using Drive Options:



Then create partitions as you wish or if you have no scheme just click Next.
My System SpecsSystem Spec
14 May 2012   #5

windows 7 64bit home premium
 
 

Sorry, I Did not make myself too clear. I mentioned Vista because I realised too late that I couldent upgrade from the 32 bit win 7 to the 64 bit Windows 7 so I was going to try and load a copy of Vista 64 bit so I could than load Windows 7.

And yes, I have a valid copy of Windows 7. It came on a DVD with two disks, the 32bit and 64 bit versions. It has a valid product key that I already validated.

I just looked in the registry and all the values are set to zero....does thats why i think i unloaded the 32bit Windows 7 when trying to put on the 64bit version. Basically, it looks like i have no OS at all.
My System SpecsSystem Spec
14 May 2012   #6

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

Quote   Quote: Originally Posted by Beachy View Post

I just looked in the registry and all the values are set to zero....does thats why i think i unloaded the 32bit Windows 7 when trying to put on the 64bit version. Basically, it looks like i have no OS at all.
It sounds like you have a retail version since you have 2 discs.

Do you know how to set the BIOS to boot from the DVD drive first?

I have no idea what you mean by "all the values are set to zero" in the registry. What are you looking at?
My System SpecsSystem Spec
14 May 2012   #7
Microsoft MVP

 

If this is Upgrade version, just boot the 64 bit Windows 7 DVD and it will see the underlying OS on HD to allow use of Upgrade version key during install - even if you delete all partitions during install as you should.

How to Boot your Computer from a Bootable CD or DVD

The steps in Clean Reinstall tutorial are the same for retail.
My System SpecsSystem Spec
14 May 2012   #8

windows 7 64bit home premium
 
 

Great, Thank You,
I can follow those instructions if only I could get something on the screen apart from a screen asking me for instructions/
All it is loading at the moment is windows/system32/cmd.exe

I typed in this format :c
And it asked me for a name of the partitions to format. As far as i remember, windows created this [partition and i cant for the life of me remember what it is called. Nor do I know how to type the command to format the partitions.

PS. sorry for the bad typos I am on an old machine with a crappy keyboard.
My System SpecsSystem Spec
14 May 2012   #9

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

You don't need to use the format command. Formatting will be done automatically as part of the installation.

You need to boot from the Windows 7 DVD.

To repeat: do you know how to set the BIOS to boot from the DVD drive first, before any hard drive?
My System SpecsSystem Spec
14 May 2012   #10

windows 7 64bit home premium
 
 

Yes I can get into the bois and boot from DVD......but nothing happens when i boot from DVD.

Any ideas on what the command is for formatting the partitions please
My System SpecsSystem Spec
Reply

 help needed, tried to upgrade from 32bit win7 to 64bit (doh)





Thread Tools



Similar help and support threads for2: help needed, tried to upgrade from 32bit win7 to 64bit (doh)
Thread Forum
Upgrade Win7 Pro 32bit to 64bit or go to Win8? Installation & Setup
Solved have w7 32bit but want to upgrade to w7 ult 7 64bit- upgrade path? Windows Updates & Activation
upgrade from win7 pro 32bit to win7 pro 64bit with same licence Installation & Setup
Upgrade from 32bit vista to 64bit win7 possible? Installation & Setup
Win7 (32bit) to Win7 (64bit) upgrade install error Installation & Setup
upgrade win7 32bit to win7 64bit "in place" ? Installation & Setup
Win7 Pro 64bit Upgrade Key w/ Prem 32bit Upgrade Disk 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 01:50 AM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33