Windows xp bootup stalls, checksum problem

[Nelda]

When I boot my computer, a screen appears advising that there is;

checksum error
defaults loaded
press F1 to continue

So I press F1 and the bootup is completed.
How can I get rid of the checksum error so the bootup proceeds without
pausing?
PS What is a checksum
If it is important, why is the machine able to 'work around" a checksum error

 

[Mark L. Ferguson]

Some system file is probably corrupt, and you need to repair all your system
files. Close all applications and go to start/run, and type:
sfc /scannow

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[Nelda]

I did that and was then asked to insert the original CD of Windows XP service
pack 2.
I did that and was advised it is the wrong disc. It is of course the right
disc, but the dialogue box insists it is the wrong one.
Any ideas.

 

[Mark L. Ferguson]

You have service packs installed that change your version from the original
CD version. Uninstall the SP's that are above the disk version. You can
reinstall those after the SFC fix.

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[Nelda]

I don't have any additional service pack installed. The original disc I
bought is:
Microsoft Windows xp Home edition includes service pack 2 Version 2002.

From memory I bought it 12 months ago.
I have the original disc in front of me. And I have the certificate of
authenticity, and the product key which is shown on the certificate.

I bought a genuine copy of the Windows software, just so I could avail
myself of the help available.

But I had trouble with the computer and all the information on the C drive
was lost. Thanks to my kids playing internet games and downloading something.
I suspect that the computer technician who "fixed" it up, did not use my disc
when he fixed it, but a disc of his own.

How can I determine if this happened.
and how can I now fix it?

I can give you a copy of my product key if that will help.

 

[Mark L. Ferguson]

Do not publish your Product Key. Someone could steal your license, and you
would not get any more automatic updates. I suggest looking at the
Add/Remove list, while you have the 'show updates' checkbox checked. It may
list SP3. Another path to checking the SP level would be to go to start run,
and type :
winver

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Please use the Communities guidelines when posting.
http://www.microsoft.com/wn3/locales/help/help_en-us.htm
Use the "Ratings" feature. It helps the new users.
Mark L. Ferguson MS-MVP
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