It can be re-enabled on Windows 7 Ultimate OEM license?

Similar Questions

• Do I have to re install Windows 7 Ultimate Retail Version over the current version of Windows 7 Ultimate OEM "Trial"?

  I have an old PC which worked fine with Windows XP on it. I wanted to continue to consider using it with Windows 7 (instead of buying a new machine).

  So my friend gave me a copy of the version of Windows 7 Ultimate (OEM) to try to see if the machine was worth keeping (i.e. good performance with my critical apps loaded on this subject).  Using this version, I was able to switch from Windows XP to Windows 7 using a clean installation. I have re-installed critical applications to check performance with the new operating system.  I was impressed (and happy) so I decided to purchase a licensed copy of Windows 7 Ultimate. I finally found a great offer and bought a copy of Windows 7 Ultimate (Full/Retail - not OEM) with the required activation key via the Internet (to be delivered next week).

  My question is: since I now have the version of Windows 7 Ultimate (OEM) already installed on my machine, I will have to perform another clean installation when my Windows 7 Ultimate retail version coming? I would really not all over again. I would like to simply enter the Activation Code of the version of Windows 7 Ultimate (Full-detail) when it arrives. What is the best way to reach my goal?

  http://Windows.Microsoft.com/en-GB/Windows/help/genuine/product-key#T1=tab01

• Can I install from a Windows Vista Ultimate Edition retail disc?

  My laptop hard drive has failed, I can install from a disk of Vista Ultimate retail and then save it with my OEM product key that came with the laptop, as the recovery DVD does not recognize the new hard drive?

  Yes, but more than likely you will have "activate by phone".

• Product Windows Vista Ultimate OEM key invalid for activation

  Hi, I just reformatted my laptop to the factory setting. And I can't seem to activate my windows vista Ultimate edition.

  Here's my MGADiag report...

  Diagnostic report (1.9.0027.0):
  -----------------------------------------
  Validation of Windows data-->
  Validation status: genuine
  Validation code: 0
  Code of Validation caching online: 0x0
  Windows product key: *-* - JP4Q2 - 3P9CF-H7QX9
  Windows product key hash: + P8Y/44KhzrtRHfjFE3fNu72Rec =
  Windows product ID: 89580-OEM-7244722-65469
  Windows product ID type: 8
  Windows license type: COA SLP
  The Windows OS version: 6.0.6001.2.00010100.1.0.001
  ID: {C17044C2-80DA-426C-A856-A6C90A4E63DD} (1)
  Admin: Yes
  TestCab: 0x0
  LegitcheckControl ActiveX: Registered, 1.9.42.0
  Signed by: Microsoft
  Product name: Windows Vista (TM) Ultimate
  Architecture: 0x00000000
  Build lab: 6001.vistasp1_gdr.101014 - 0432
  TTS error:
  Validation of diagnosis:
  Resolution state: n/a

  Given Vista WgaER-->
  ThreatID (s): n/a, hr = 0 x 80070002
  Version: 6.0.6001.18152

  Windows XP Notifications data-->
  Cached result: n/a, hr = 0 x 80070002
  File: No.
  Version: N/a, hr = 0 x 80070002
  WgaTray.exe signed by: n/a, hr = 0 x 80070002
  WgaLogon.dll signed by: n/a, hr = 0 x 80070002

  OGA Notifications data-->
  Cached result: n/a, hr = 0 x 80070002
  Version: N/a, hr = 0 x 80070002
  OGAExec.exe signed by: n/a, hr = 0 x 80070002
  OGAAddin.dll signed by: n/a, hr = 0 x 80070002

  OGA data-->
  Office status: 102
  2007 Microsoft Office system - 100 authentic
  OGA Version: N/a, 0 x 80070002
  Signed by: n/a, hr = 0 x 80070002
  Office Diagnostics: 77F760FE-153-80070002_7E90FEE8-175-80070002_025D1FF3-364-80041010_025D1FF3-229-80041010_025D1FF3-230-1_025D1FF3-517-80040154_025D1FF3-237-80040154_025D1FF3-238-2_025D1FF3-244-80070002_025D1FF3-258-3_B4D0AA8B-920-80070057

  Data browser-->
  Proxy settings: N/A
  User Agent: Mozilla/4.0 (compatible; MSIE 7.0; Win32)
  Default browser: C:\Program may Explorer\iexplore.exe
  Download signed ActiveX controls: fast
  Download unsigned ActiveX controls: disabled
  Run ActiveX controls and plug-ins: allowed
  Initialize and script ActiveX controls not marked as safe: disabled
  Allow the Internet Explorer Webbrowser control scripts: disabled
  Active scripting: allowed
  Recognized ActiveX controls safe for scripting: allowed

  Analysis of file data-->

  Other data-->
  Office details: {C17044C2-80DA-426C-A856-A6C90A4E63DD}1.9.0027.06.0.6001.2.00010100.1.0.001x 32*-*-*-*-H7QX989580-OEM-7244722-654698S-1-5-21-1674027433-3301849206-1598507935ASUSTeK Computer Inc.        G50VT American Megatrends Inc.. 213 20090421000000.000000 + 000E5333507018400F848090409Pacific Standard Time(GMT-08:00)03102100Microsoft Office system 20071219

  Content Spsys.log: 0 x 80070002

  License data-->
  The software licensing service version: 6.0.6001.18000
  Name: Windows Vista, Ultimate edition
  Description: operating system Windows - Vista, channel OEM_COA_SLP
  Activation ID: f79b5e33-4a4e-451c-9e8a-55dcc9bdb89d
  ID of the application: 55c92734-d682-4d71-983e-d6ec3f16059f
  Extended PID: 89580-00144-447-265469-02-18441-6001.0000-1352014
  Installation ID: 012592337301380811887025520531994186120556355796904652
  Processor certificate URL: http://go.microsoft.com/fwlink/?LinkID=43473
  Machine certificate URL: http://go.microsoft.com/fwlink/?LinkID=43474
  Use license URL: http://go.microsoft.com/fwlink/?LinkID=43476
  Product key certificate URL: http://go.microsoft.com/fwlink/?LinkID=43475
  Partial product key: H7QX9
  License status: licensed

  Windows Activation Technologies-->
  N/A

  --> HWID data
  Current HWID of Hash: OAAAAAEABAABAAEAAQACAAAAAwABAAEAeqggMxBKPuVmUPDr6MOyPLDm8vRoFBJlVNU8mqxWRso =

  Activation 1.0 data OEM-->
  N/A

  Activation 2.0 data OEM-->
  BIOS valid for OA 2.0: Yes, but no SLIC table
  Windows marker version: N/A
  OEMID and OEMTableID consistent: n/a
  BIOS information:
  ACPI Table name OEMID value OEMTableID value
  APIC1057 APIC 042109
  FACP 042109 FACP1057
  DBGP 042109 DBGP1057
  HPET 042109 OEMHPET
  START BOOT1057 042109
  MCFG 042109 OEMMCFG
  042109 OEMX1057 OEMX
  CO-SUBMISSION 042109 OEMECDT
  042109 OEMB1057 LASRYVITRAGE
  042109 OEMATKG ATKG
  SSDT PmRef CpuPm

  Any suggestion?

  Thank you in advance.

  Regarding

  Esmonde Pang

  What is curious, if you notice at the beginning of the report's true State.

  In any case, go to the start menu and type slui 4. Make sure you do it on an administrator account.

  In the dialog box that opens, select your location and call the Microsoft Product Activation Center. Follow the instructions that the automated phone system gives you and then try to activate it.

  Let us know what happens.

• Reinstallation of Windows 7 with OEM license with an OEM license and the manufacturer's warranty expired

  My hard drive starts to die, if I want to backup all my data and be ready in case it fails. One of the things on my list of verification is to ensure that I can reinstall Windows 7 if need be.

  I don't have in my possession a Windows reinstallation disk, so I want to create a USB bootable for windows 7. The link to the .isos DIgital River that I use to create my bootable USB key doesn't work for users with OEM licenses. Very annoying, but I can legally get a Dell reinstall drive instead. But Dell wouldn't send me reinstallation disks because my warranty with Dell expired.

  The result of this is that if your a manufacturer guarantee expired, you can no longer reinstall windows on the same computer!

  Dell says it is responsible for providing the relevant recovery media, including Windows used to do with the Digital River .isos, but who no longer work for people with Microsoft's Windows 7 OEM license. Microsoft says that it is the responsibility of Dell to provide its customers with the recovery media (disks to reinstall windows) in the first place. Personally, I'm not interested in the blame game - I just want to have access to a recovery media so I have the option of legally re - install windows 7 in the future with my OEM license.

  Can you help me with this problem? Thank you.

  Downloads Microsoft removing the Digital River and replacing them with a non-functional tool are extremely boring.

  If you can still start, update Dell backup and restore to the latest version:

  https://www.YouTube.com/watch?v=7yOz10Y8GCE

  http://www.Dell.com/support/home/drivers/DriversDetails?driverId=8HY96

  Make a USB (older than 2012 systems) recovery or recovery external hard drive (more recent than 2012 systems):

  https://www.YouTube.com/watch?v=hu6jx-QG7xE

  Boot from it to the new hard drive and use it to reinstall. Recovery media is using earlier versions may not work on the new disks.

• I have a pre-installed version of Windows 7 Ultimate OEM, how to change this with Windows 7 Ultimate SP1 new product main which I was recently transferred without own re - install the OS

  I have a laptop Wipro that comes with an OEM installed windows 7. Now I have a new windows 7 ultimate with SP1 product key, and I'm looking for change my product key directly without having to re - install full OS. Please suggest, thank you 1

  Click Start, type: slui.exe 3

  Press enter

  Enter the new product key, and then click next to activate via the Internet.

• Can I use the existing Windows vista ultimate 32-bit (real) key to do a fresh install (due to errors of unrecognized class) win vista home premium 32 bit (original cd)?

  Inspiron Dell 1720 2.2 GHz, 2 GB ram, Win Vista ultimate SP2.

  Cannot install all programs currently due to errors of windows install. I have tried scannow in cmd which seems to close automatically in less than a second to click on enter.
  I tried switching win installer services then in manual and automatic ('start' ed) with no ruling change ever to the problem. So now since I can't possibly find another solution, I'm doing a new installation of windows vista Home premium 32-bit which I did not have the keys. So the query. I would appreciate any comment how to solve this problem. Thanks in advance.

  Look at the product key shown on the label on the computer.  Which edition of Windows is on the label?  If the label says Home Premium Home Premium dvd is likely a recovery disk only.  So if there is a recovery disk, so it can reinstall a new copy of Home Premium and all reset the status of the plant.  You will lose your programs and data.

  If the Premium family edition dvd is a dvd retail then you may be able to do a repair on-site modernization (aka ' install fix') of Vista Ultimate with it, but please answer these questions first.

• is there anyway that I can get a CD of windows vista ultimate?

  Hello, I need a upgrade disc ultimate windows vista. If I can somehow stil don't understand, would be nice.

  Hi CPC - HP.

  I don't HP could send you one, but it's possible Microsoft could. You can try to contact them.

• I can't run iTunes on Windows 7 ultimate: "the itunes library.itl file is locked."

  then I try to run itunes and a message appears that says "itunes library.itl file is locked on a locked disk or you do not have permission to write to this file.
  then I ran out and he said it was bundles. I then ran the program to check if I could run it on xp, but he also said that I had no programs supported. What I can do, or how to get programs supported? !!!

  Hello darealguty,

  Thanks for posting on the Microsoft answers Forum.

  iTunes 9.0.2 version is compatible with Windows 7. You could try the following to see if it helps.

  Go to the iTunes folder. Right-click and select Properties. Uncheck the read-only box.
  Click on apply, click OK to change all subfolders. Click OK.
  Now check and see if you can open iTunes.

  If this is not enough, then you must go to http://www.apple.com/support.

  Please let us know if this suggestion has helped to solve your problem.

  Sincerely,

  Marilyn
  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think

• How can I check if a Windows Vista Ultimate key is valid without installing it?

  Is it possible to check if a key of the OS is valid without installing the software?

  I bought Vista Ultimate x 64 off Amazon, they say its brand new and never opened/used, but I want to confirm that before I'm stuck with something that does not work. But I don't have a computer to install it, it is part of a PC planned future upgrade. It could be the end next year e times, I use the software, so if I found out that the seller has lied to this topic's condition I would be $120 and a $ 1000 + stuck accumulation up the river without a paddle...
  So, is there anyway way to check if a key of BONE is valid without installing it?

  Is it possible to check if a key of the OS is valid without installing the software?

  I bought Vista Ultimate x 64 off Amazon, they say its brand new and never opened/used, but I want to confirm that before I'm stuck with something that does not work. But I don't have a computer to install it, it is part of a PC planned future upgrade. It could be the end next year e times, I use the software, so if I found out that the seller has lied to this topic's condition I would be $120 and a $ 1000 + stuck accumulation up the river without a paddle...

  So, is there anyway way to check if a key of BONE is valid without installing it?

  Suggestion only. It may or may not get what you want...

  call the local activation Center, give the number and ask them.
  Good luck
  Licensing Microsoft Volume - Activation Centers

  Stay on the phone until you are connected to a live person.

  Modification of...

  Noel mentioned about it takes time to "go through the system and show as blocked.»

  This is somethingn a value taken into account.

• Windows 7 Pro OEM License Manager

  I have a professional OEM Windows 7 license, I need to reinstall, but I don't have the disk.  I have another pc I have bought accidenlty windows 8, I want to buy windows 7 pro for her also.  can I use the same drive on both PCs?  Each pc will have its own license.  The two PC's with Windows 7 pro Acers and 8 versions premium oem.  I'll go the full pro 7 license.

  The key is the specific version

• Hello, I currently windows 7 Home premium 64-bit running on my laptop, can I install windows 7 ultimate 32 bit over this as an upgrade? I have the ultimate disc then, how do I use it? Thank you, Mark.

  I am running windows 7 Home premium 64 bit on my laptop. I have a disc of windows 7 ultimate 32 bit, is it possible to upgrade to the ultimate disk, if so, how, if not how do I use the ultimate disc? Thank you very much, Mark.

  No, you can't, but if its Windows 7 Ultimate you want, simply use the Windows 7 Ultimate product key to upgrade Windows 7 Home Premium to Windows 7 Ultimate using Anytime Upgrade.

  If the license for Windows 7 Ultimate, you have access to is a retail version update or complete, you can use the product key and the Express upgrade to Windows 7 Home Premium to Windows 7 Ultimate. First of all, check that the edition of Windows 7, you are upgrading is already enabled (if it isn't, you will encounter complications and that you might start all by performing a clean installation). Click Start, type Anytime Upgrade, click on the option enter a key, enter the key of Windows 7 Ultimate edition at the request, click Next, wait while checking the key, accept the license agreement, click on upgrade, wait while the software upgrades, (it may take 10 minutes or more depending on the if updates are required) your computer restarts automatically, after the reboot, Windows 7 will notify you updating the computer, the computer will restart once more automatically and will be completed the upgrade, a window will appear notifying the upgrade was successful and your computer is ready to use, click Close, you should be upgraded to Windows 7 Ultimate files the stored settings and programs.

  Cases of failure to upgrade Express:

  Windows 7 Anytime Upgrade fails:

  If your getting the following: error: Windows Anytime Upgrade failed
  This problem may occur if Windows 7 SP1 was downloaded by Windows Update, but has not yet been installed.
  See: http://support.microsoft.com/kb/2660811

  = Other reasons and possible corrections.

  Windows Anytime Upgrade fails with the error:
  "every time that the upgrade has failed. Go online to solve the problem.
  http://support.Microsoft.com/kb/2658652

  If Anytime Upgrade still does not work:

  Shut down and restart your computer.

  Make sure that the Windows updates have been installed.

  Download the hotfix that contains a tool called CheckSUR, this tool will look at the package and the maintenance of records and difficulty any data corrupted, the tool is listed under kb947821 he can be found at the following link http://support.microsoft.com/?kbid=947821

  If Anytime Upgrade still does not work, turn off the user account control:

  1. go in user accounts in Control Panel

  2 change user account control settings

  3. pull the slider to the level as low as possible

  4. restart the PC

  5. pass by the "Anytime Upgrade" as usual

  Try the following:

  1 disable any security software before attempting to upgrade

  2. make sure that your computer is updated (devices and applications)

  3. disconnect all external devices before installing.

  4. check your hard disk for errors:

  Click Start

  Type: CMD, according to the results, right-click CMD

  Click on "Run as Administrator"

  At the command prompt, type: chkdsk /f /r

  When you restart your system, your computer will be scanned for errors and will try to correct them.

  1. click on start, type msconfig in the search box and press ENTER.

  User account control permission

  If you are prompted for an administrator password or a confirmation, type the password, or click on continue.

  2. in the general tab, click Selective startup.

  3. under Selective startup, clear the check box load startup items.

  4. click on the Services tab, select the hide all Microsoft Services check box, and then click Disable all.

  5. click on OK.

  6. When you are prompted, click on restart.

  7. after the computer starts, check if the problem is resolved.

  Also run the Windows 7 Upgrade Advisor:

  http://www.Microsoft.com/Windows/Windows-7/Upgrade-Advisor.aspx

  Who should I contact if I have problems installing and / or activation of my product key card?

  Please contact to the: www.windows7.com/getkeysupport.

  If all above fails them, install Windows 7 Service Pack 1, and then try the Express Upgrade:

  Learn how to install Windows 7 Service Pack 1 (SP1)
  http://Windows.Microsoft.com/en-us/Windows7/learn-how-to-install-Windows-7-Service-Pack-1-SP1

  If your key is not valid and you will need to change the keys, you may need to Open regedit and remove first the ProductKey value in the following registry key:
   
  HKCU\Software\Microsoft\Windows\CurrentVersion\WindowsAnytimeUpgrade

• No keys I got working Microsoft active Windows 7 Ultimate, please help!

  Hello

  I bought the package "of media staff" (MS Windows 7 Ultimate and Office 2010) through my employer (University of Sydney). A few weeks later I received a package from Microsoft Operations PTE LTD, which contained an invoice, my public customer number, part numbers and 4 beautiful enough installation DVD. Three for the office and one for Windows 7 Ultimate. Two labels "Product keys" yellow aka were attached to the DVD boxes

  I tried to use my installation DVD upgrade OEM operating system on my new computer Windows 7 Home-> Windows 7 Ultimate. Upgrade failed with an error indicating that this DVD can not be used for the upgrade or something to that extent.

  I was able to reinstall Windows 7 Ultimate but impossible to activate. I get an error saying that no product keys can be used to activate Windows 7 Ultimate Edition.

  My order date 09/11/2012
  List of choice number: GS_177699-1087417
  Send ID WO202024
  Customer PO number: 24829218

  If somehow an incorrect product key has been set the speaker to DVD?

  Thanks in advance for your advice.

  Ivan

  You can't do a upgrade direct from Home Premium to Ultimate, you can use the upgrade Express by using the product key existing.

  If the license for Windows 7 Ultimate, you have access to is a retail version update or complete, you can use the product key and the Express upgrade to Windows 7 Home Premium to Windows 7 Ultimate. First of all, check that the edition of Windows 7, you are upgrading is already enabled (if it isn't, you will encounter complications and that you might start all by performing a clean installation). Click Start, type Anytime Upgrade, click on the option enter a key, enter the key of Windows 7 Ultimate edition at the request, click Next, wait while checking the key, accept the license agreement, click on upgrade, wait while the software upgrades, (it may take 10 minutes or more depending on the if updates are required) your computer restarts automatically, after the reboot, Windows 7 will notify you updating the computer, the computer will restart once more automatically and will be completed the upgrade, a window will appear notifying the upgrade was successful and your computer is ready to use, click Close, you should be upgraded to Windows 7 Ultimate files the stored settings and programs.

  Windows 7 Anytime Upgrade fails:

  If your getting the following: error: Windows Anytime Upgrade failed
  This problem may occur if Windows 7 SP1 was downloaded by Windows Update, but has not yet been installed.
  See: http://support.microsoft.com/kb/2660811

  = Other reasons and possible corrections.

  Windows Anytime Upgrade fails with the error:
  "every time that the upgrade has failed. Go online to solve the problem.
  http://support.Microsoft.com/kb/2658652

  If Anytime Upgrade still does not work:

  Shut down and restart your computer.

  Make sure that the Windows updates have been installed.

  Download the hotfix that contains a tool called CheckSUR, this tool will look at the package and the maintenance of records and difficulty any data corrupted, the tool is listed under kb947821 he can be found at the following link http://support.microsoft.com/?kbid=947821

  If Anytime Upgrade still does not work, turn off the user account control:

  1. go in user accounts in Control Panel

  2 change user account control settings

  3. pull the slider to the level as low as possible

  4. restart the PC

  5. pass by the "Anytime Upgrade" as usual

  Try the following:

  1 disable any security software before attempting to upgrade

  2. make sure that your computer is updated (devices and applications)

  3. disconnect all external devices before installing.

  4. check your hard disk for errors:

  Click Start

  Type: CMD, according to the results, right-click CMD

  Click on "Run as Administrator"

  At the command prompt, type: chkdsk /f /r

  When you restart your system, your computer will be scanned for errors and will try to correct them.

  1. click on start, type msconfig in the search box and press ENTER.

  User account control permission

  If you are prompted for an administrator password or a confirmation, type the password, or click on continue.

  2. in the general tab, click Selective startup.

  3. under Selective startup, clear the check box load startup items.

  4. click on the Services tab, select the hide all Microsoft Services check box, and then click Disable all.

  5. click on OK.

  6. When you are prompted, click on restart.

  7. after the computer starts, check if the problem is resolved.

  Also run the Windows 7 Upgrade Advisor:

  http://www.Microsoft.com/Windows/Windows-7/Upgrade-Advisor.aspx

  Who should I contact if I have problems installing and / or activation of my product key card?

  Please contact to the: www.windows7.com/getkeysupport.

  If all above fails them, install Windows 7 Service Pack 1, and then try the Express Upgrade:

  Learn how to install Windows 7 Service Pack 1 (SP1)
  http://Windows.Microsoft.com/en-us/Windows7/learn-how-to-install-Windows-7-Service-Pack-1-SP1

  If your key is not valid and you will need to change the keys, you may need to Open regedit and remove first the ProductKey value in the following registry key:
   
  HKCU\Software\Microsoft\Windows\CurrentVersion\WindowsAnytimeUpgrade

• version of Windows 7 ultimate beta expires in 24 hours.

  My free trial version of windows 7 ultimate beta expires in 24 hours. Do I have to purchase the full version or buy an anytime upgrade.
  I received a message that says:
  To continue using widows backup files and then install any edition of windows 7 ultimate.

  I am running windows vista before my departure to the rc of windows version 7. What I have to reinstall windows vista or I can buy any version of windows 7 ultimate to run on my computer.

  Your question is answered in the post of TaurArian: "to avoid any interruption, please reinstall an earlier version of Windows or switch to Windows 7. In both cases, you will need to do a custom (clean) installation [emphasis] to replace the RC. "~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

• Conditions of the retail of Windows XP Professional and license and decal OEM COA / label question:

  Hello everyone and especially lawyers license!

  It's pretty obvious (applying common sense) that a single license is a single Installation, no matter if Windows XP, Vista or 7, or OEM or retail.

  However...

  Question 1:
  Is that the only true, firmer and more correct to do statement?
  ""Windows XP Professional OEM license dies with your computer / caisse".

  Question 2:
  I have two DELL computers. One is with Windows XP Professional OEM (Dell) and the other with Windows Vista Business OEM (Dell). I would like to swap/Exchange two licenses COA stickers (if it's physically possible) and simply change the Microsoft Windows operating system on these two computers. From what I understand at this time - and please correct me if I'm wrong - Microsoft Licensing policy said it is legally impossible. True? Fake?

  Question 3:
  This question is about the "decommissioning" of Windows Vista business to Windows XP Professional. I'm OK with my understanding that there are some licenses of Windows Vista Business out there that can be legally retired, and some who cannot?
  How do I determine by looking at just the Windows Vista Business OEM COA sticker, if it is a license that can legally be downgraded or not?
  If it can be downgraded, can I license Windows Vista Business COST just the installation of Windows XP Professional key, when asked to enter?

  Thank YOU ALL for your expertise and your help!

  Hello

  Question 1: "Windows XP Professional OEM license dies with your computer / caisse"-c' is licensed OEM is NOT transferable to another machine and once your dies of PC/LAptop, then the license dies with him.

  Question 2: You cannot exchange an OEM license of any computer to another. This includes exchanging the COA from one device to another, making of this ould invalidate your license, as the certificate of authenticity shall be kept with the license provided with the original machine.

  Question 3: Downgrade rights allow you to get off at analogues for the same edition of vista, IE company from Vista to XP Pro, you cannot downgrade from Vista to XP Pro home.

  hope that answers all your questions.