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Windows 7: Reusing windows 7 oem on the same machine.

01 Dec 2014   #1
Ianzy015

windows 7 home premium 64bit
 
 
Reusing windows 7 oem on the same machine.

can i use the same windows 7 home oem installer on the same machine which i had it previously installed?
And how to reinstall it?
I have an old hdd with win7 ultimate installed in it which i want to downgrade.

Thanks in advance.


My System SpecsSystem Spec
.
01 Dec 2014   #2
gregrocker

 

Yes, do a Clean Reinstall - Windows 7

Be sure to delete all partitions during the booted install, all other drives unplugged.
My System SpecsSystem Spec
01 Dec 2014   #3
Ianzy015

windows 7 home premium 64bit
 
 

Thanks for your response.
So, how can i reformat my old hdd? Because i forgot the password of the hard drive.
My System SpecsSystem Spec
.

01 Dec 2014   #4
gregrocker

 

Why would you need a password for the HD if you're booting the Win7 installer to delete all of its partitions? You'd only need a password to boot into the HD, which you should not be doing.

If there is data on it that you'd like to rescue then before deleting all partitions Copy & Paste - in Windows Recovery Console to flash stick or external or another HD.
My System SpecsSystem Spec
01 Dec 2014   #5
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

You boot from the dvd and format the install partition, or you delete the entire hard drive down to un allocated space.

Clean Install Windows 7

Look carefully at steps #6-7-8
My System SpecsSystem Spec
01 Dec 2014   #6
Ianzy015

windows 7 home premium 64bit
 
 

Oh, i see. Well, there's a slight problem. The oem os doesn't load.
My System SpecsSystem Spec
01 Dec 2014   #7
Ianzy015

windows 7 home premium 64bit
 
 

The boot priority is already dvd.
My System SpecsSystem Spec
01 Dec 2014   #8
gregrocker

 

Work through the steps for Overcoming Windows 7 Installation Failures - Windows 7 Help Forums

If necessary use a new installer burned or written to DVD or Flash stick with tool also provided. As long as your Product Key is still readable and you choose the same exact version this will work.
My System SpecsSystem Spec
01 Dec 2014   #9
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

Do you mean the oem dvd doesn`t load ?

What does it matter if the oem operating system doesn`t load, thought you were going to re install Windows ?

Drop the dvd into the optical drive, re boot the pc, you should then see the words "Press any key to boot from dvd" if you don`t, then you don`t have the bios set to boot 1st from the dvd drive.
My System SpecsSystem Spec
02 Dec 2014   #10
Ianzy015

windows 7 home premium 64bit
 
 

Uh. What i mean is, the installer doesn't boot up. The dvd drive was already 1st priority. It just doesnt let me load it for some reason.
My System SpecsSystem Spec
Reply

 Reusing windows 7 oem on the same machine.




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