restart problem

[S. Wally]

My computer with windows XP is caught in a restart loop.
It will start to open Windows XP and then restarts again.
One time it stopped at a screen giving me about 5
different options: start in safe mode, start in safe mode
with networking, etc, etc, The last choice on the list
was something called "Last known good configuration". I
arrowed down to that and hit enter and this didn't help.
It is still caught in a restart loop. I didn't install
any new software or anything (I think it does automatic
updates every once in a while though).
Please help.
..

 

[Kelly]

Repair the Windows XP Installation - Note: You will forfeit all MS Updates.

Configure your computer to start from the CD-ROM drive. For more information
about how to do this, please refer to your computer's documentation or
contact your computer manufacturer.

Insert your Windows XP compact disc (CD) into your CD-ROM drive or DVD-ROM
drive, and then restart your computer.

(You can also boot with a Windows 98/Me Startup disk with CD support and run
WINNT.EXE in the I386 folder on the CD)

When the "Press any key to boot from CD" message is displayed on your
screen, press a key to start your computer from the Windows XP CD.

When you see the following message displayed on the Welcome to Setup screen,
press ENTER: To setup Windows XP now, press ENTER.

At this point an option to press R to enter the Recovery Console is
displayed. Do not select this option.

On the Windows XP Licensing Agreement screen, press F8 to agree to the
license agreement. Make sure that your current installation of Windows XP is
selected in the box, and then press the R key to repair Windows XP. Follow
the instructions on the screen to complete Setup.

Perform an In-Place Upgrade (Reinstallation) of Windows XP
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q315341