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Removing partial install of 2nd os

I have a computer with XP Home that I started to upgrade to XP Pro. During the install something happened to the cd drive and it stopped reading the disk. Now when the computer restarts I get a screen asking which os I want to use XP Home or XP Pro Setup. At this point I just want to remove the XP Pro Setup since my cd drive no longer works. How can I do that?

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  • 5 more comments 
  • mannybobanni Jan 16, 2009

    The system restore won't allow me to go back far enough to the date of install. Now what?

  • mannybobanni Jan 17, 2009

    It's an HP laptop, so I think it might be expensive to replace. I never priced it, but it might not be worth fixing. Is there anything else I can do, or am I just stuck with the setup being partially completed? I'm guessing there are files out there somewhere that are telling the pc to try and complete the setup. Is it possible to just delete those files and fix the problem? I'm sure it's not that simple, but any other help would be appreciated.

  • mannybobanni Jan 17, 2009

    It's a Pavillion XH555 prod# F3929HR sn#TW14029307. It's probably about 7-8 years old, or more.

  • mannybobanni Jan 17, 2009

    Yes I can, as I tried that per earlier instructions.

  • mannybobanni Jan 18, 2009

    I uninstalled and reinstalled the cd/dvd drive but nothing changed in the way it operates. I pretty sure there is a problem with the physical drive and not the driver or installation. I can here the drive spin slow and the read/write head move and click, but the drive never spins fast as in normal operation.

    So aside from having a new drive installed is there anyway to get rid of the partial XP install, or for that matter completely reinstall the system from scratch, without having access to the cd drive?

  • mannybobanni Jan 18, 2009

    Will the pc boot from an external cd drives, or does Windows have to load drivers before they will work. I'd really like to reformat the HD and start a new install from scratch, but if the pc won't boot from an external device then I can't do that.

  • mannybobanni Jan 18, 2009

    I really appreciate all of your help, Spoem. Keep up the great advice!


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You should be able to do a SYSTEM RESTORE to a point before the XP Pro installation.

Start the machine and start tapping the F8 key until the boot menu is displayed. Use the arrow keys to highlight SAFE MODE and press enter. If you are given a menu to choose which Windows to boot into, choose the Home edition. Windows will load with the minimum drivers. Your screen display will be 640 X 480 and the icons will be large. You will eventually see a window advising you that you are in safe mode, click OK or NO. Click NO. That should open The System Restore function. Choose to restore the system to an earlier date. A calendar with be displayed. The BOLD dates are the ones that you can restore to. Choose a date that was before the date you tried to install XP Pro. Follow the prompts and the restore process will run and reboot your computer. Following the reboot, the installation will complete and Windows will open.

If you have installed a service packs or updates after the restore date you will need to install them again.

Good Luck! and please let me know how this works out for you.

Posted on Jan 16, 2009

  • 5 more comments 
  • Barry Parks Jan 17, 2009

    What kind of computer is it? Desktop or laptop? Can the CD-ROM be easily replaced?

  • Barry Parks Jan 17, 2009

    What is the model? I'll try to see if the drives are swapable.

  • Barry Parks Jan 17, 2009

    Can you boot into Safe Mode?

  • Barry Parks Jan 17, 2009

    Boot it into Safe Mode. Right click on My Computer and then click on MANAGE. In the left column, click on Device manager. In the right window you should see all of the installed devices. Look near the top to see if the CD-ROM is shown. If it is, right click on it and choose uninstall. If you are prompted that the device will be uninstalled click yes. The drive should then be uninstalled.

    At the top of the window is My Computer. Right click on it and then click on "scan for hardware changes". The drive will hopefully be reinstalled. After the installation completes, close everything so you are back to the desktop. Put a CD in the drive and test to see if you can explore the disc.

    Let me know what happens.

  • Barry Parks Jan 18, 2009

    Thsi would be a long shot, but worth a try. Do you have access to a different computer and , if so, do you have a 1 GB or larger USB thumb drive? If you can use these two, copy the entire XP installation CD to a folder on the thumb drive. There are probably some hidden files on the CD, so you will need to make them visible before you copy the files. Then see if you can access the USB folder from your computer. Run setup and press enter to install XP. At the second menu, press 'r' to repair an installation of XP. Choose your Home installation and follow the prompts. With a little luck, it should work.

    Another option would be to check used computer stores for an external CD-ROM drive. Some of them connect to the parrallel port. If you can find one, this would be a good option, as you would have a drive in the future. It has been a while since I've seen these, but it's an option, if you can find one.

  • Barry Parks Jan 18, 2009

    Here's an option that may save you some effort. I checked on ebay and found an external drive that connect trough the pcmcia slot. There are also so usb 2.0 drives for less, but I don't know if they would work, as I think your laptop is too old and has usb 1 or 1.1. Anyway here's the link:|66%3A2|65%3A12|39%3A1|240%3A1318|301%3A0|293%3A1|294%3A50

    As always, good luck!

  • Barry Parks Jan 18, 2009

    You would need to check the BIOS to set the boot order. You should be able to tell by the available options. Some devices, like USB, will only show if they are connected.


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Windows Installation Disc VS Windows Upgrade Disc -NOT THE SAME-

Having Trouble Booting To Your Windows Upgrade Disc?

...Upgrade discs aren't bootable discs. To repair a windows installation, you must use either a system repair disc or, better yet, a windows installation disc (genuine Retail/OEM discs are pretty much your only option to completely reinstall your windows operating system, unless you own a previous full installation disc of a previously released Windows version (such as XP or Vista), in which case you could install that windows operating system and then upgrade to a newer windows OS like windows 7. however if you ever need to reinstall windows 7, you would either need to reinstall the older windows OS, then upgrade to the newer one.

If that isn't clear, I'll sum it up....

Let's say you bought a computer, that computer had windows xp home edition. Maybe you wanted to upgrade from Windows XP/Windows Vista or Windows 7?
Well in order to switch from Windows XP/Vista to Windows 7, (or even from Windows 7 home premium- to windows7 Pro or Ultimate), then you must either:
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on Jul 06, 2010 | PC Laptops

1 Answer

Not installed os in my loptop
Obviously, the most convenient way to downgrade is to do so without reformatting. In order to do that, you need to have a real retail CD of Windows XP. If all you have is a recovery disk that came with your computer, you’re not going to be able to do it this way. You will need to reformat.
To downgrade, use the following as a guide:
  1. Do a full backup of your current, Vista system. If something happens, you can always revert to the backup.
  2. Boot your computer off the Windows XP disc. Just pop the CD into the CD-ROM and reboot. If, for some reason, your computer boots without looking for the CD drive, you need to go into your system BIOS and change the boot order so that it checks for the CD drive during the boot process.
  3. When the computer asks to press the space bar to boot from the CD, do so.
  4. When Windows XP Setup starts up, press “R” to enter the recovery.
  5. If it asks you to choose a Windows installation, press a number and hit Enter. The likely number will be 1.
  6. If you get asked for an Administrator password, enter when asked. If you do not know it, you will need to abort and go back into Windows Vista to get your password.
  7. At the command prompt, we’re going to use the “fixboot” command. We’ll use the following commands in sequence to prep for XP:
  8. fixboot
    cd \
    ren windows winvista

May 09, 2010 | PC Laptops

1 Answer

Computer loads personal settings and then logs off instantly

Sounds like a malware issue I've seen before:

XP logs user off immediately when the user tries to log in - can't get to any desktop

Allegedly 3rd party advertising software Blazefind (homepage and searchbar highjacker)


Boot to the Windows XP CD (RAID systems will need the RAID driver floppy during the bootup - hit the F6 key when directed in the bottom message).

Enter the Recovery Console by choosing 'R' at the Welcome to Setup screen.

Choose the OS shown (1) and hit enter.

Hit enter for a blank password if asked for one. If this isn't accepted, make sure that the user is using the correct XP CD (using a PRO version CD for a HOME version install or visa versa will result in a password rejection. If the user has upgraded to PRO over a HOME edition, try booting the HOME CD). If the CD is correct, and the user can't produce the correct Administrator password, then a clean reinstall of the OS (with full data loss) becomes the final answer.

Assuming the user now sees a command prompt, type "CD %systemroot%\system32" (without quotes) and hit ENTER. Normally the %systemroot% default is "c:\windows\" but this depends on if the system defaults were kept or changed during OS installation, of course.

Type "COPY USERINIT.EXE WSAUPDATER.EXE" (again, without quotes) and hit ENTER. This makes a copy of "userinit.exe" and simultaneously names the new copy "wsaupdater.exe".

Type "EXIT" and ENTER. Remove the XP CD while the system is restarting.

The user should now be able to log in normally... but there is one more thing that needs to be done or the issue will repeat itself when the user runs his anti-spyware program again.

Once logged into an administrator account, click the START button.

Choose RUN from the Start Menu.

Enter "REGEDT32" in the OPEN window (notice there is no "i" in edit) and click OK.

By clicking on the + signs next to each branch, click through the tree in the left pane until you get to


Click on the WINLOGON folder in the left pane tree, so that it is highlighted.

Look for "UserInit" in the right pane. It should have a value of "C:\WINDOWS\system32\wsaupdater.exe," (yes, there is a comma at the end of the value). Double-click on "UserInit" and carefully change its value to "C:\WINDOWS\system32\userinit.exe,". Click OK.

Close the Registry Editor. Reboot. Fix is complete. Anti-spyware programs will probably identify and remove "wsaupdater.exe" but the system is no longer using it.

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How can i format my laptop?

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How want to downgrade win vista to xp pro hp compaq v3000

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If you want to upgrade from XP Home to XP Professional, you can do that with the appropriate upgrade CD. But unless you are networking in an office setting, there really are no features in Pro that you don't have in Home.

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