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Windows 7: How can you completely remove Windows 7 from a PC?

12 Jul 2010   #1

Windows 7 Home Premium 64-Bit
 
 
How can you completely remove Windows 7 from a PC?

My laptop originally had Windows Vista Home Premium x86 on it, but I upgraded it to Windows 7 Ultimate x86. Is there any way to return to Windows Vista Home Premium?

PS: I don't want to do this, I'm just saving it as a last resort because of this registry problem I am having.

My System SpecsSystem Spec
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12 Jul 2010   #2

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, clean install, upgrade disc
 
 

Two possible ways:

If you have the original DVD, you can reinstall

If the System came preinstalled there may be a recovery drive that will allow you to return to factory specs. This partition is sometimes rendered useless, however, on installation of new Systems.

If you are having a registry problem the easy solution is system restore or system image.
My System SpecsSystem Spec
12 Jul 2010   #3

Windows 8 Core X64
 
 

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12 Jul 2010   #4
Microsoft MVP

 

As suggested, System Restore to before the registry problems, run sfc /scannow, then if necessary a Repair Install which is the next best thing to reinstalling.

You do not need to restore to Vista to clean reinstall Windows 7. When you boot the Windows 7 DVD it will scan the HD to see another OS which is all that is needed to pass a flag allowing use of Upgrade version key, even if you then go on to use Custom>Drive tools to repartition and/or reformat.

If you feel you may have a virus, it is best to wipe the HD. Make your Recovery Disks first so you have a path back to Vista, then use this tutorial: SSD / HDD : Optimize for Windows Reinstallation

If you reinstall Windows 7 upgrade version to a wiped HD, you'll then need to use one of the workarounds here to activate since the booted installer will not see an OS to allow Upgrade key: Clean Install with a Upgrade Windows 7 Version
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 How can you completely remove Windows 7 from a PC?





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