You need to start backing up your data as the issue you have is beyond the
ability to repair.
If you have to use the hidden machine administrator account do so, then
backup the data from each user, then do a clean install of XP, wiping the
drive of all data and starting over fresh.
Here are the instructions for the hidden admin account:
If you have XP Pro on your computer, at the log in screen type
ctrl-alt-delete
twice. In the user account type administrator, leave the password blank and
press enter. You likely didn't create a password for this hidden account
during setup and if the computer was purchased with XP pre-installed it
doesn't likely have one either,
If you have Home, boot into Safe Mode (F8 after the post test and before
Windows starts. Once Windows starts loading, you've missed it and will have
to try again). You'll have an option to log on as Administrator. Again,
the same procedure, you'll be asked to log in to get into safe mode, type
administrator, leave the password blank and press enter.
This will get you in and you should be able to access all accounts from
there. With regard to the next step, remember, you are going to wipe this
drive and lose all data so you need to move it to another partition or
someplace off your hard drive to restore later:
Procedure for clean install:
Assuming your system is set to boot from the CD-ROM drive, boot with the XP
CD in the drive. If it isn't or you are not sure, you need to enter the
system's BIOS. When you boot the system, the first screen usually has
instructions that if you wish to enter setup press a specific key, when you
see that, do so. Then you will have to navigate to the boot sequence, if
the CD-ROM drive is not first line, set it first in the boot sequence. Save
your settings and exit with the XP CD in the drive. The system will reboot.
A few screens into the boot process, if you see the message on the boot
screen to "Press any key in order to boot from the CD," do so.
After loading drivers and files, you should be taken to a screen with
the following:
To Setup Windows XP now, press ENTER.
To Repair a Windows XP Installation using Recovery Console press R.
To Quit setup without installing Windows XP, press F3.
In your case, press ENTER.
Agree to the License agreement by pressing F8.
You will then be taken to a screen with two options.
To repair the selected Windows XP installation press R.
To continue installing a fresh copy of Windows XP without repairing,
press ESC.
This will bring you to a partition map where you
can delete, create and format partitions.
Select the drive you wish to format, delete the partition, then create a new
partition, format as desired and continue with XP installation.
One last issue, after you do the clean install and restore the data, you
will likely receive and access denied message when trying to access your
data. You will need to take ownership as follows:
Note, file ownership and permissions supersede administrator rights. How
you resolve it depends upon which version of XP you are running.
XP-Home
Unfortunately, XP Home using NTFS is essentially hard wired for "Simple File
Sharing" at system level.
However, you can set XP Home permissions in Safe Mode. Reboot, and start
hitting F8, a menu should eventually appear and one of the
options is Safe Mode. Select it. Note, it will ask for the administrator's
password. This is not your administrator account, rather it is the
machine's administrator account for which users are asked to create a
password during setup.
If you created no such password, when requested, leave blank and press
enter.
Open Explorer, go to Tools and Folder Options, on the view tab, scroll to
the bottom of the list, if it shows "Enable Simple File Sharing" deselect it
and click apply and ok. If it shows nothing or won't let you make a change,
move on to the next step.
Navigate to the files, right click, select properties, go to the Security
tab, click advanced, go to the Owner tab and select the user that was logged
on when you were refused permission to access the files. Click apply and
ok. Close the properties box, reopen it, click add and type in the name of
the user you just enabled. If you wish to set ownership for everything in
the folder, at the bottom of the Owner tab is the following selection:
"Replace owner on subcontainers and objects," select it as well.
Once complete, you should be able to do what you wish with these files when
you log back on as that user.
XP-Pro
If you have XP Pro, temporarily change the limited account to
administrative. First, go to Windows Explorer, go to Tools, select Folder
Options, go to the View tab and be sure "Use Simple File Sharing" is not
selected. If it is, deselect it and click apply and ok.
If you wish everything in a specific folder to be accessible to a user,
right click the folder, select properties, go to the Security tab, click
Advanced, go to the Owner tab,
select the user you wish to have access, at the bottom of the box, you
should see a check box for "Replace owner on subcontainers and objects,"
place a check in the box and click apply and ok.
The user should now be able to perform necessary functions on files in the
folder even as a limited account. If not, make it an admin account again,
right click the folder, select Properties, go to the Security tab and be
sure the user is listed in the user list. If not, click add and type the
user name in the appropriate box, be sure the user has all the necessary
permissions checked in the permission list below the user list, click apply
and ok.
That should do it and allow whatever access you desire for that folder even
in a limited account.
Good luck.