Windows 7 Upgrade Guide: All Your Questions Answered
The amount of information pouring out of Redmond these days about Windows 7 is unprecedented, and so is the level of enthusiasm. In a frantic attempt to make sense of it all, Maximum PC has been releasing our ongoing Feature Focus series, which hopefully, has helped you determine wither upgrading to Windows 7 is worth it for you. Once you made that decision however, or buy a new PC that’s upgrade eligible, do you know exactly what you’re getting? Can I upgrade from Windows XP? Do I need to buy the same product edition when upgrading? Can I go from 32 bit to 64 bit? These are just a few of the many questions we seek to answer after the jump.

Check out our Windows 7 Buyers Guide here!
The Basics
Release Date: October 22nd 2009
Qualifying OS’s For Upgrade: Windows 2000, XP, Vista
Qualifying OS For In-Place Upgrade: Vista
Upgrade Editions: Home Premium, Professional, Ultimate
System Requirements:
• 1GHz or faster 32-bit (x86) or 64-bit (x64) processor
• 1GB RAM (32-bit) / 2GB RAM (64-bit)
• 16GB available disk space (32-bit) / 20GB (64-bit)
• DirectX 9 graphics processor with WDDM 1.0 or higher driver
Can I Buy the Windows 7 Upgrade Edition For Use With Windows XP or 2000?
Yes, but there’s a catch. Only Windows Vista users will be able to do an in-place upgrade. This means that Windows XP or 2000 users will be forced to do a clean install. Maximum PC readers are generally technical enough to know that this is a good idea anyway, but if your planning on upgrading PCs for friends and family, bring a USB hard drive and be prepared to stay awhile.
I Only See One Version of Each Edition. Am I Getting the 32 or 64 Bit Version?
All retail editions of Windows 7 will ship with both the 32 & 64 bit DVDs. This is a huge improvement over Vista where users would need to order additional disks manually from Microsoft. Users who purchase Windows 7 digitally through the Microsoft store will be allowed to choose which version they want prior to starting the download.
How will I know if my Processor Supports the 64 Bit Edition?

Download and run GRC’s SecurAble processor testing application. The download is only about 100k, and like everything from GRC, doesn’t require an install. SecurAble will quickly tell you if your processor supports 64 Bit instructions, and if you will be able to use the coveted XP Mode found in Windows 7 professional. Just make sure it says Yes in the Hardware Virtualization field, and your good to go!
Since I Get a 32 Bit & 64 Bit CD, Can I Install It On Two Machines?
No. Since you are only given one CD key, you can only activate a single version at a time. The good news here is that your CD Key is interchangeable. This means that you can start out with the 32 bit edition if that’s all you need, knowing that you can easily format and change over to 64 bit later on if your requirements change.
Some home users coming from XP might be hoping to cheat the system by calling Microsoft for manual activations on additional machines, but I’m afraid it won’t work this time. Windows is constantly checking in with Microsoft for various reasons (most of which you agreed to in the EULA), and as with Vista, multiple activations are often caught, kicking both copies into non genuine mode. Even though this isn’t as serious as it used to be, it’s still not a good idea, and it’s defiantly illegal.
I Am Running a 32 Bit Edition of Windows Vista. Can I Upgrade to the 64 Bit Version of Windows 7?
Your only option in this scenario will be to perform a clean install. Upgrading a 32 bit edition to 64 bit or downgrading a 64 bit install to 32 bit using the in-place approach is not supported.
I Am Currently Running Windows 7 RC. Can I Upgrade to Windows 7 Retail After Purchase?
If you're using Windows 7 RC right now (as many of us are), you'll have to back up all your personal data and perform a clean install of the retail version of Windows 7. After installation, you'll need to restore your data and reinstall your apps. As stated in the Windows 7 RC download page, Microsoft doesn't recommend that you install RC on a personal or "production" machine. Their stance has always been for users to update beta and RC builds by formatting and reinstalling.
Comments
Comments are closed on this article
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jibran_pcc
March 01, 2011 at 11:20pm
I just installed (well upgraded) my dell 1750 from vista basic to 7 ultimate, everything when perfectly except for my RAM is a little off, does 7 use a gig and a half to run. I remember a friend saying if you don't delete the system files from vista it'll run a little slower then it should, but a whole 1.55 gigs constant flow of 'what the fuck' my computers using to run vista seems a little rediculous, any help?
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Ankhkare
October 11, 2010 at 9:26am
I love windows 7 because it provides a very good system to update drivers windows and in my opinion everyone can use this for their computer. I had a lot of problems while I was using windows XP and I could never find the decent drivers I needed for my computer.
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ariston
October 18, 2011 at 2:52am
I think that would be an example of "does my application work in windows 7" but really the image is not important.
Klima Servisleri İstanbul
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kristof2050
July 14, 2010 at 7:10pm
If you want to keep your copy of xp or vista you can use the win 7 upgrade and do the install on that drive or secound partition of your main hdd if you have a secound. Then it's easy to have the best of both worlds. Heck if you have a duel boot xp and vista you can turn it into a tri boot then.
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rcmz
August 26, 2010 at 7:21pm
a kind of product key finder namedd Password Genius supports Windows products.
just google it.or click http://password-genius.com
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zwozi
June 20, 2010 at 11:35am
Hi,
I recently built a computer and installed windows 7 pro 64-bit oem and activated it. Two days later the hard drive failed so I sent it to newegg for a replacement. Can I install windows 7 pro 64-bit oem again since it is still the same computer and the same exact model of hard drive?
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garrettemusic
May 21, 2010 at 12:45pm
Hi!
i was wondering if it is able to install windows vista from insode windows 7?
i have win7 ultimate x64 but i dont like it cuz' i can't play any game i want to play, like codmw1 but before when i had win vista i could. so.. is it possible to ''downgrade'' win 7 to vista?:P
i probalby wont remember to check this site so if you have an answer to my question please mail me =)
garrette_music@hotmail.com
Greets garrettemusic
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DroogMoog
May 06, 2010 at 8:05am
Hey People,
I just installed (well upgraded) my dell 1750 from vista basic to 7 ultimate, everything when perfectly except for my RAM is a little off, does 7 use a gig and a half to run. I remember a friend saying if you don't delete the system files from vista it'll run a little slower then it should, but a whole 1.55 gigs constant flow of 'what the fuck' my computers using to run vista seems a little rediculous, any help?
<HOLY SHIT!! ITS MOOG!!>
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yasser
March 09, 2010 at 1:33pm
why my laptop takes very long time before its enter to windows 7 x64 ultimate ?
and sometimes black screen shows after writting my password that before enter to windows 7 x64 ultimate , then i can't enter to windows 7
my laptop is : hp pavilion dv5- 1199ee
please helpe me
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Fletch
March 08, 2010 at 4:33pm
Quick question. My laptop has vista home premium on it and as a gift I got a full version windows 7 ultimate reatil disk.. Can i use this to upgrade my vista to windows 7 just like an upgrade disc or can this only be used as a clean wipe and install? i want to upgrade but dont want to do a clean install but not sure if I can with a full retail disk?? Do i have to get an upgrade only disk??
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carlosrr
February 26, 2010 at 8:18am
Hello
I have an XP pro setup on my desktop with massive amounts of installed software. Is it possible to use the Vista Anytime Upgrade disk to move the OS to Vista, without product activation, and then upgrade Vista as is to Windows 7? I have the AU disc and am able to get W7 Ultimate upgrade via my university and have been unable to find any answers.
Cheers and thanks in advance
Carlos
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Dataleak
February 20, 2010 at 12:09pm
Hi guys,
I'm considering upgrading to Windows 7 but I have a few questions which I'm not completely clear about. I'm currently using Windows Vista Premium x64. Which version of Windows 7 will I need to purchase to be able to use the upgrade option. I have tons of installed programs, which will be a pain to individually reinstall. Do I need to purchase the Premium version of Windows 7, or are the Basic and Ultimate also compatible with the upgrade option? Has anyone performed the upgrade option first hand and how were the results? I don't mind if a few programs have incompatibilty issues.
Any advice will be greatly appreciated.
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Arshmeet
February 12, 2010 at 8:53am
If I Have Windows 7 Home Premium (Genuine) and Upgrade it to Windows 7 Ultimate (No-Genuine) is it will be Genuine or not?
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facinoricci67
February 12, 2010 at 12:41am
What are the difference between 32bits and 64bits computers. I'm just confused on it. Thanks you may share some great answers.
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Dataleak
February 20, 2010 at 12:08pm
The only difference seems to be the available memory (RAM) that Windows can access. Here's an indepth description: http://windows.microsoft.com/en-GB/windows-vista/32-bit-and-64-bit-Windows-frequently-asked-questions
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addwhat
February 03, 2010 at 2:51pm
My laptop has a seperate partion for the OS of 32.2 GB with 10.9 GB of free space. I have seperate partions for Programs & for Data.
I will be using a Windows 7 Ultimate ISO DVD as my Windows 7 source.
Can I do an upgrade so as to keep my programs without the need to reinstall them as with a clean install?
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addwhat
February 03, 2010 at 2:51pm
My laptop has a seperate partion for the OS of 32.2 GB with 10.9 GB of free space. I have seperate partions for Programs & for Data.
I will be using a Windows 7 Ultimate ISO DVD as my Windows 7 source.
Can I do an upgrade so as to keep my programs without the need to reinstall them as with a clean install?
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cbr4
December 05, 2009 at 9:44am
So I installed Win 7 Ultimate N, which I now discover lacks some features of Vista. Can I install Vista (OEM) over the Win 7 and not risk losing data?
Note: Win 7 was installed on fresh hard drive, not an upgrade from Vista.
Yeah, I figure some Win 7 dependent apps will be inoperable. But in my case I would be able to restore many apps that I used in Vista but which are incompatible with Win 7 (Sony digital audio editor, Flip Share video manager, to name a few).
Thanks....
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cbr4
December 05, 2009 at 9:43am
So I installed Win 7 Ultimate N, which I now discover lacks some features of Vista. Can I install Vista (OEM) over the Win 7 and not risk losing data?
Note: Win 7 was installed on fresh hard drive, not an upgrade from Vista.
Yeah, I figure some Win 7 dependent apps will be inoperable. But in my case I would be able to restore many apps that I used in Vista but which are incompatible with Win 7 (Sony digital audio editor, Flip Share video manager, to name a few).
Thanks....
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robesaw
November 12, 2009 at 9:26pm
OK, so my second BURNING question:
I have nothing but continual problems with itunes with respect to missing files, duplicates, etc. I am worried that when I backup itunes and do a fresh install when upgrading from Vista to 7, I won't be able to safely restore my itunes data w/o problems.
Any idea how this has been successfully done? I wouldn't expect MS to help out too much in this respect.
Thanks in advance!!
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allfaltus
November 11, 2009 at 1:15am
I bought this laptop online in November that came with Windows XP Pro installed which is downgraded from Windows 7 professional. But the machine came with no media either for Xp or Windows7.
I wish to use windows 7 Pro on the machine. But where can I get the media from? How much does it cost in US?
Thanks,
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nekollx
November 11, 2009 at 10:03am
http://store.microsoft.com/microsoft/Windows-Windows-7/category/102
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2060350368%201179212716&name=Professional
------------------------------
Coming soon to Lulu.com --Tokusatsu Heroes--
Five teenagers, one alien ghost, a robot, and the fate of the world.
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mdmcfadyen
October 31, 2009 at 10:11am
I did a clean install of Windows 7 Pro on my Dell T5400 dual Xeon processor workstation and had to actually remove 1 of the 2 processors to get windows 7 to install. Once the OS was up and running I tried putting the 2nd processor back in and Windows 7 still came up with an error of "multiple processors not supported".
After spending some time on the Microsoft forums I found out that it is one of the many bugs they are working on. So aside from having to live with only 1 processor the windows 7 experience has been good, although it is still a microsoft OS.
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ChucklesG
October 28, 2009 at 5:47pm
So my retail version of Windows 7 Professional Upgrade DVD arrived today - I insert it in my computer to upgrade from Vista 32bit Home Premium - can't upgrade from Premium to Win 7 Professional, can if I had bought Win 7 Ultimate... What a pain. Don't want to do a clean install that's why I bought Win 7 Professional 'UPGRADE'.
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darkgamerdave
October 28, 2009 at 5:07am
I have a 32 bit windows vista home premium OS and wish to upgrade to windows 7 home premium or ultimate 32 bit, is it possible to do the ultimateupgrade?, if not the home premium?
thanks in advance.
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JuliusKY
October 25, 2009 at 11:18pm
Just use the upgrade like you would to install right over the old system, you can boot from the disk and select custom and copy right over the old system and have a fresh clean install which is the best, or you can insert the disk after the system is running and do an upgrade.
Now if you want to do the upgrade on a new or clean HD the best way is to install W7 skip the product key you have 30 days for that. After you get to the windows screen just reboot leaving the disk in and do a custom install again this time it will recognize that an operating system is on the drive, let it continue up to the product key enter product key this time put the key in and continue and every thing will be like a new system.
The reason you don't enter the product key on the first install is it doesn't recognise a prevous system and when you enter the product key it gives you a faild warning. you can try entering the key on the first try you might get lucky, if not you can clear the key and continue the first istall to the windows screen then restart with the disk in the drive,the second time it will take the key. good luck. it worked for me.
JuliusKY
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tuts69
October 24, 2009 at 4:31am
tuts
hi i just wanna ask question, i have a vista ultimate 64 bits intalled on my system, now i recieved my pre order win 7 pro upgrade, now my question can installed this win 7 pro upgrade over vista ultimate? thanks
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DarkHelmet
October 20, 2009 at 12:52pm
"How Does An Upgrade Edition “Clean Install” Differ From Retail Copies of Windows 7?"
Mentioned on Page 2 of the above article.
I'm holding out on purchasing my Windows 7 Home Premium Upgrade Family Pack until we finally get a definitive answer on how this process will work.
Windows 7 ships the day after tomorrow, so if anyone figures this out, please post it! Thanks. :)
-Helmet
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Mpire
October 21, 2009 at 5:20am
Actually...Following the trend of MS upgrades from Win95 and on... NO. You do not need to install Vista, XP, Win 2000 etc before doing a clean install of Win 7. All it will require you to do is verify you have a previous version of a OS.
Example: You have a clean hard drive and were previously running Win"x" If you boot to the Win 7 upgrade DVD, it will start the process, then prompt you to insert your previous version Windows disc. Once it spins up and verifies it, it will simply ask you to pop out the old disk, and re-insert your Win 7 upgrade disc and continue installing the actual full version.
So in actuallity its a full version on the upgrade, it just makes sure you already had a copy of windows before. And history will prove that upgrading from one OS to another NEVER works flawlessly. I will always do a clean and fresh install.
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DarkHelmet
October 21, 2009 at 5:32am
Yeah, I get all that, but since nobody has actually gone through the process with Windows 7 Upgrade media yet (because it isn't released yet), notbody *really* knows how the experience will go. If you read the above article, the XP to Vista upgrade experience did not work the way you are describing it, and was quite a pain in the ass until a workaround was found.
I prefer not to assume.
-Helmet
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DarkHelmet
October 27, 2009 at 5:58pm
MaxPC answered the question, as I was sure they would. It's a pretty piss poor solution, but that's Microsoft's fault, not MaxPC...
http://www.maximumpc.com/article/howtos/how_use_your_windows_7_upgrade_disk_fresh_pc?page=0%2C1
-Helmet
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MajorEvent
December 14, 2009 at 9:10am
I installed two MS Win7 Home Premium student UPGRADE versions doing a clean install this weekend. At the point where it asks for the key during the install, don't enter the key, just click next and continue. With the student version, I didn't have to say which version I had (only Home Premium in the downloaded iso, I expect) but, if it asks, select the version you have the key for (home premium, professional, or ultimate). You have 30 days to enter a valid key and activate doing the install this way AND you skip the upgrade check (so it behaves like a regular clean install). Continue with the install as usual.
When you are ready to enter the upgrade key (anytime up to 30 days later and an internet connection is required), open the system applet (from the control panel or right click Computer on the start menu and select properties). At the bottom it says Windows activation and there is a clickable link to enter a new product key. Click the link and enter your upgrade key. Once accepted the key will be validated online and your version of Windows 7 will be activated. DONE
That's all there is to it..
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Galraedia
October 12, 2009 at 5:44pm
I'm seriously considering canceling my subscription with Max PC if they don't shut the hell up about Winblows 7. I'm sick of hearing about it over and over again. There are a lot of better operating systems out there, so why doesn't Max PC review them instead of mentioning Winblows 7 in every freaking edition? I feel like I'm reading a catalog instead of a magazine.
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RtDK
November 28, 2009 at 3:39pm
Back to PCWorld with you. You can bash Windows all you want with your fellow Mac fanboys there. As for PC-users, the vast majority of us actually know how to use Microsoft's OS and don't have issues with it. There are also lots of people out there who are just now diving into 7 though, and those people probably have a lot of questions--so if you ask me, MaxPC is doing the responsible thing here, by catering to the masses who don't necessarily know what they're doing.
So, do us all a favor--cancel your subscription, go away, and leave us in peace, or don't. But you're in the wrong place if you don't want help with Windows pal. Other forums await you, so don't let the door hit you on the way out.
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ultrapuggy@gmail.com
October 27, 2009 at 7:56am
So, I just made this account because I noticed this comment. I had this urge to smack you in the face through the internet.
- You made your account on October 12, 2009...the same day as this comment. You then proceed to threaten to cancel said account... (So convincing, grow up)
- You post only 3 comments, all of which are on Windows 7 articles and are direct attacks to Windows 7 without any proof whatsoever.
- Points 1 and 2 are more than enough. Please cancel your 'subscription'.
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knelson276
November 07, 2009 at 10:11am
Do you always feel the need to resort to vilence over something you don't agree with.
- He could have been referring to his magazine subscription. I’ve been reading maxpc for a very long time, since before they changed their name, it was originally called cdrom today and then boot. But only occasionally do I go to their web site or post.
- I don’t quite know it I would call that an attack on win 7. I too have gotten the feeling that I was reading articles prepared by Microsoft themselves. There’s a lack of a sense of objectivity, too many minor window dressing items being touted as reasons for upgrading. Many of these items seem far to mediocre to be worthy of praise from Maximum PC.
- While everyone is entitled to their opinion, its not always necessary to express it when its sole purpose is to bash on someone you don’t agree with, its neither productive or helpful.
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nekollx
October 27, 2009 at 9:31am
"The power of the Pimp Hand is strong with this one."
------------------------------
Coming soon to Lulu.com --Tokusatsu Heroes--
Five teenagers, one alien ghost, a robot, and the fate of the world.
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DarkHelmet
October 22, 2009 at 1:37pm
It's called Maximum "PC", you tool. And Windows runs on the majority of the world's PCs, which would also include the majority of Maximum PC readers, so why shouldn't they extensively cover it? If you they doing article after article about the latest Apple OS, I'd see your argument.
-Helmet
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nekollx
October 13, 2009 at 9:54am
you mean articles like...
http://www.maximumpc.com/linux
http://www.maximumpc.com/article/howtos/howto_install_linux_risk_free_with_no_formatting_or_repartitioning_required
------------------------------
Coming soon to Lulu.com --Tokusatsu Heroes--
Five teenagers, one alien ghost, a robot, and the fate of the world.
![]()
AleceHelix
October 06, 2009 at 7:26pm
It seems to me that MS didn't take your advice about making a fewer amount of OSes after all. Pity.
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brunost
September 28, 2009 at 5:40am
Hello.
If I buy a computer with Windows 7 Professional with the option to downgrade to Windows XP Professional 32-bit, when I decide to migrate my system to Windows 7, will I be able to install the 64-bit version? It is OEM.
Thanks!
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MajorEvent
December 14, 2009 at 9:32am
In my experience, when you "downgrade" when purchasing from an OEM vendor, it means you forego the newer version altogether. Typically you receive a recovery disk or process and not an actual Windows disk that allows you to return the machine to the condition it was in when you made the purchase. This would mean you don't get Win 7 Pro at all. Be sure you understand exactly what the vendor will provide if you downgrade.
The OEM version of Windows is limited to install on ONE pc. As long as you reinstall to the same PC, you can use the same OEM version over. Typically, it's tied to the mainboard in your PC but too many changes to the hardware may hit the threshold also. Some have had luck with calling MS and asking for leeway.
You will need to do a clean install to go from 32 bit to 64 bit. Short answer, yes it's possible but will require some advanced prep on your part to protect you documents and settings (you can use the files and settings transfer wizard if you have a 2nd hard drive with decent free capacity).
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jcseely
September 24, 2009 at 9:31am
About how the upgrade validation from XP process will work? I can't seem to find an answer on the interwebs.
Will we simply need to insert our XP CD or enter our product license key? Or will they force us to reinstall XP every single time we want to do a clean install of 7?
Any official news on that?
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efougner
August 28, 2009 at 8:20pm
Buyer beware. Sure, you can get vista for $109 with a free upgrade to Windows7....BUT IS JUST AN UPGRADE!. Also, just like the Vista OS, it is OEM. This means both the VISTA 0S and Windows 7 OS can be installed on only one computer PERIOD! Further more, every time you need to re-install the OS, you will have to install vista first and THEN upgrade to Windows 7. It is much better to buy the full retail version...if you can afford it. This way, the OS does not die with the computer and gives you a much shorter install time.
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Siggy28681
August 27, 2009 at 10:35pm
I noticed that you can get vista for 109.99 on new egg with free w7 upgrade. Im sure the full version will be more than that. So is it better to spend the extra money on the full version or just buy vista with the upgrade? Yes this is going on a newly build cpu. thanks for your help.
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MajorEvent
December 14, 2009 at 9:39am
I think I answered this question here:
http://www.maximumpc.com/article/features/windows_7_upgrade_guide_all_your_questions_answered#comment-52771
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fn_tool
August 20, 2009 at 11:59am
Here's my scenario: This fall, I'll be upgrading my single current PC from XP to W7 using my $50 Upgrade as soon as it ships. Early next year, I'll be replacing MB, CPU, RAM & Video Card and (hopefully) I'll want to stay at W7. No Hard Drive upgrade with this round of new hardware.
I think that when I upgrade my hardware, I'll propably want to re-install W7, and I think I might have to start out from my Original XP-Pro CD, then re-do the Upgrade process. Since you mentioned the Inactivation of my current valid XP Product Code, I'm thinking I might not be able to install XP again as part of my hardware upgrade.
Then you mentioned the "Insert the XP CD", so now I'm not entirely clear. Sorry.
WIll I be able to first to my upgrade/clena install of W7, then several months later replace major components? ANy ideas on what my process might be?
Keep up hte excellent work!
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