Windows XP...cannot boot laptop

I'm can't get my Compaq 2100US Laptop to boot.........It has Windows XP Home /SP2.

When I start up the PC now, I get a screen that says, "We apologize for the inconvenience, but Windows did not start successfully, a recent hardware or software change may have caused this, ….etc."
Then I am offered with a bunch of options to either:

1) Start in Safe Mode
2) Safe Mode with Networking
3) Safe Mode with Command Prompt
4) Start Windows Normally
5) Last Known Good Configuration (Your most recent settings that worked)

I've tried all of the above and nothing works. If I choose 4 or 5 from the list, it looks as though Windows is starting because you see the black screen with the Windows logo and the little blue bar scrolling across but then the screen goes black and stays black and nothing happens - XP never loads.
If I choose 1, 2 or 3 from the list, I get hung up on a screen that shows several lines of text as follows:
“multi(0)disk(0)rdisk(0)partition(1)/Windows\AppPatchSystem 32” and so forth. The screen will just stay like this. I left it for about 30 minutes when I gave up shut it down.

Therefore I can NOT get XP to boot in any Safe Mode.

After some research, the next thing I tried to do was to a Repair Install of Windows XP. This is supposed to allow you to install Windows XP but just fix the damaged files without reformatting and wiping out the hard drive. So, with my XP install disk, I restarted the computer and started following the Windows Setup steps. Everything goes fine until I get to the screen where Windows XP Setup is supposed to detect the XP installation on the C drive that I am trying to repair. Then it simply reverts back to the original screen & locks up.

Thanks in advance for any help !!!