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It appears that Windows 7 can be legitimately downloaded from authorized sites. If you have a legal product key, this could be your replacement media.

I've lost my Windows 7 installation disk, but I possess the product key. What should I do if I want to reinstall Windows on my computer?

Take a full system image backup as soon as possible and use that as a fallback. You can always restore to that image in lieu of a reinstall and you'll be back to where you were at the time that the backup was taken.

You should also get in touch with the vendor who sold you the computer - if they provided you with a copy once, perhaps they'll be willing to get you a replacement copy.

You could, I suppose, go buy a new copy. Most people aren't interested in doing that because they're stuck paying for something that they feel they already have.

That's when most people resort to downloading a copy. If you do it right, it might even be legal.

Let me explain...

Big legal caveat

It's been my understanding for years that downloading a copy of Windows from ... well, from just about anywhere, was illegal. Even if you had a copy of a product key to activate it, simply downloading a copy of the software breaks copyright law.

I believe that's still true for Windows XP and presumably Vista.

I'd been hearing rumblings that Microsoft actually made Windows 7 available as an online download. In doing some research into this, I found what appear to be at least two legitimate sources from reputable providers.

For the life of me, however, I cannot find anything from Microsoft itself to corroborate that this is indeed sanctioned. Given that the providers are well known and the fact that Microsoft hasn't taken action to stop it makes me think that it's at least tolerated.

So, while I can't make any statements pro or con as to the legality (I could well be wrong either way), I will say this: in my opinion, this is at least ethical if (and only if) you already have a valid, purchased, product key.

So I must cover my assets and include this bottom-line caveat: if you elect to take this download from anywhere other than Microsoft itself, you assume all risk and potential liability relating to its legality.

Downloading Windows 7

At this writing, you can download Windows 7 here.

That's from Softpedia, a large and well-known freeware, shareware, and trialware download site. Because Windows 7 is not free, and it's certainly not shareware, this qualifies as a "trial". Without a product key, you can use it for something like 30 days before Windows cripples itself.

You can also download here.

That's a blog entry at "mydigitallife.info" that includes direct links to the various Windows 7 .iso files hosted at Digital River. Digital River is a well-known and trusted service provider for companies large and small selling software.

Make sure to select the correct edition - Home Premium, Pro, Ultimate or Enterprise - and processor type - 32-bit (x86) or 64-bit(labeled x64).

Of course, Windows 7 is available from many other places, including assorted file sharing sites and peer-to-peer networks. Those are clearly not sanctioned and often include additional "bonuses" in the form of assorted malware. Regardless of where you get it, make absolutely certain that you're getting it from a trusted source. Right now, I think Softpedia qualifies.

Important things to know about your download

It's big, really big. You're looking at something around a three-gigabyte download for most of the Windows 7 editions. Depending on your internet speed, that could be anywhere from an hour to several days worth of download.

It's an ISO file. For best results, you'll want to then burn that ISO file to a DVD, which in turn should behave pretty much like an original installation DVD.

It's not OEM. This would be the generic, retail version of Windows 7. If your machine came with a copy customized by the manufacturer (OEM), then those customizations will not be present and your product key may not work. Product key issues aside, this typically means that after installing from this copy, you'll need to get any missing applications and drivers from the computer manufacturer directly.

If your product key doesn't work

Again, make sure that you have the correct edition of Windows 7 to match the one for which your product key was originally issued.

It's possible that your product key was assigned to an OEM version, and so, it may not work with the retail version download. There's no legal way around this that I'm aware of, other than to return to your computer manufacturer and ask for a replacement Windows disc.

There is a way to download it legally without a product key

You can, of course, download Windows 7 without having a product key at all.

But it's not free.

You can purchase Windows 7 as a direct download from Microsoft.

All legit and legal and malware free.

Article C5052 - January 25, 2012 « »

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Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

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Recent Comments
12 Comments
Maro
January 27, 2012 5:04 PM

As I had a problem during Restore from the Backup of my Windows-7 Home Premium 64 bit Gateway computer, I phoned their customer support aand they advised to restart the computer and immediately om booting (which was unsuccessful), before getting any message, press SIMULTANEOUSLY Alt and F10. This allowed me to get from the "Hidden safe" compartment of the hard drive, the original as came from factory, computer. Actually at that point it gave also the option to keep my added data or just the original as built condition. After that I rebooted correctly and Restored from my Backup and everything went OK. Interesting here to report two items:
1. The Customer Support was from a place in "Southern India"!!!
and
2. The software has ACER "copyright"!
I made a backup of the four DVDs at 'the factory as built" and asked for again to be more sure to buy the original media for re-installation (in case my hard drive is for any reason damaged) and they mailed it at a cost of $19.99 plus taxes. These are important to have as they have the drivers for the keyboard, camera, speakers, DVD writer, built-in monitor..etc.
All computer manufactureres now either include the "capability" to make media to restore the computer as it was originally built or at least allow to buy them at a reasonable price WITHOUT HAVING TO BUY AGAIN THE ORIGINAL WINDOWS INSTALLATION MEDIA (CD or DVD) as it will be included in their "Restore" media.

Mick
January 27, 2012 8:08 PM

I had the original Win 7 Professional factory CD. Over the years, it disappeared! I called M.$., and for $35 they sent me a new copy (with SP1). I had to verify the numbers off of the old installation, but I now have a disc for "repairs!

Mark J
January 28, 2012 12:01 AM

@Maro
I believe that Alt F10 is a machine specific solution.
It's not so strange that the software has an Acer copyright. Acer bough Gateway in 2007. As for the customer support coming from Southern India, I would be more surprised if it came from anywhere else.

Mark J
January 28, 2012 1:03 AM

@Derek
Why doesn't MS allow you to download Windows? Now they do with Windows 7. Perhaps they thought it would slow down piracy.

As for the legality of using a legal Windows CD/DVD to install on a friend's PC if they have a legitimate key I don't have installation media for Windows - what if I need it?

David Browne
January 28, 2012 9:08 AM

"It's possible that your product key was assigned to an OEM version, and so, it may not work with the retail version download. There's no legal way around this that I'm aware of, other than to return to your computer manufacturer and ask for a replacement Windows disc."

Which product key do I use? The OEM one installed by HP or the one on the sticker affixed to the computer?