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Windows 7: How can I wipe clear all data on pre-owned/used PC?

09 Jan 2012   #11

Windows 7 Ultimate x64 SP1

If you think your license is legit, a tool like Magic Jellybean will show you the key. If your computer has a sticker on it (it should, or else you shouldn't have bought it with an OS), then download that version of Windows 7 from the usual legit site, and then use your existing license key.

The license key determines if your copy is legit...not the disc it was installed from.

My System SpecsSystem Spec
09 Jan 2012   #12
Microsoft MVP


Quote   Quote: Originally Posted by Huwey View Post
Well, I purchased the computed "used" you see, so I have no backups.

I contacted zoostorm, and they said they dont put windows7 "ultimate" on their systems, just "home" and "premium", so Im guessing the guy I purchased off, put "ultimate" edition on himself, via disk or upgrade. Its verified genuine OS, and I'd like to keep it. But just want to do a fresh wipe. What would be best to do?

Look for a COA sticker on the machine to see what is the licensed version originally installed upon it, and whether the Product Key is readable.

How can I wipe clear all data on pre-owned/used PC?-1270558000_86224332_1-pictures-buying-windows-7-prof-coa-sticker-only-100pcs-up-needed.jpg

If so follow these steps to get a perfect reinstall: Reinstalling Windows 7

My System SpecsSystem Spec
09 Jan 2012   #13

Windows 7 Ultimate (build 7600) 32-bit

I ran the windows checker, and it confirmed the edition installed is genuine. However, I believe the manufacturers installen win 7 premium, and the owner who I bought it off, had installed win 7 "ultimate" himself. Its all legit though any should I get iso, or do recovery or what, with these circumstances?
My System SpecsSystem Spec

09 Jan 2012   #14
Microsoft MVP


Can you contact the owner to ask for the Product Key for Ultimate, as it may be an Anytime Upgrade.

Most owners don't otherwise install a full copy of Ultimate on a computer which already has a $100+ value OS which came with it.

Is there a COA sticker on the machine?
My System SpecsSystem Spec
09 Jan 2012   #15

MS Windows 7 Ultimate 64-bit SP1

Extract the embedded key from the system using Magic Jelly Bean or Produkey. This key you can use to upgrade to Windows 7 Ultimate by Anytime Upgrade method.

Look for the COA sticker on your system. This should give you the original Windows 7 version installed on your system. Note down the serial number. Download the same version iso from a legit web site. Install Windows 7 from this ISO burned on a DVD. Use the key on COA sticker to activate the windows. You may have to call Microsoft on telephone.

After activation of windows use the key extracted from your old system using Magic Jelly Bean or Produkey and upgrade to Windows 7 Ultimate using Anytime Upgrade method.
My System SpecsSystem Spec
09 Jan 2012   #16
Microsoft MVP


I'd use Belarc Advisor which will also provide the Product ID. If it has OEM in the string it is not Anytime key and means the owner bought retail OEM version or used an illegal cracktivation. This is why I would ask the previous owner directly. He might provide the key if there's no COA sticker, else be stuck with selling stolen property.

Either way you want to wipe the HD first to clean the boot sector: Diskpart Clean Command

Then Clean Install Windows 7 the licensed version from COA sticker or System builder, activate at Computer>Properties.

After activating Home Premium try inserting Ultimate Product Key in Anytime Upgrade by typing Anytime in Start Search box to see if it will take. If not stick with Premium which is all most users need.
My System SpecsSystem Spec
09 Jan 2012   #17

MS Windows 7 Ultimate 64-bit SP1

Anytime Upgrade key works only on an activated Windows 7...
My System SpecsSystem Spec
09 Jan 2012   #18
Microsoft MVP


The point of having him reinstall the licensed version using the Product Key on COA sticker or obtained from System Builder is so that he can activate it.
My System SpecsSystem Spec
14 Jan 2012   #19

Windows 7 Ultimate (build 7600) 32-bit

Ok, first of all, sorry about the delay guys, I wasnt receiving any email notifications to tell me there had been new posts posted.

Okay, I done a tiny bit of research, and think the tower came with NO operating system, therefore there is no COA sticker, so the previous owner installed their OWN copy of windows 7 ultimate edition.

I ran Belarc advisor, and it turns out, it says ****-OEM-.....In the 20 digit code. What does this show? What should I ask the previous owner exactly, If he Paid or Not?

Ok, before I do any HDD wipes, I want to make sure if your method you stated, will protect my current OS? As I dont want to lose the win 7 I have.
My System SpecsSystem Spec
14 Jan 2012   #20

Windows 7 Home Premium 32bit
Windows 7 DVD

You will have to ask the seller for a disc with Windows 7 on it. The only other way is to purchase either a Retail copy, from Microsoft's store or try eBay.

Buy xbox, download microsoft office and windows 7 from store UK
My System SpecsSystem Spec

 How can I wipe clear all data on pre-owned/used PC?

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