Computer won't boot up

Running Windows XP home edition SP3 (I think) on a Dell.

Computer seemed to be working fine. I switched from my log in to my wife's and hers looked like it was in some sort of safe mode (large distorted icons with less colors, etc). I rebooted and it went through the system scan where it checks the hard drive, etc. Then I rebooted and it came up with a black screen with just the mouse icon in the middle. There was nothing else on the screen. Everytime I reboot it gives me the option of booting in safe mode, safe mode with networking, safe mode with dos prompt, or boot with last good configuration. It does not matter what I choose, it boots up with just the black screen and the mouse icon. In safe mode it does have "Safe Mode Microsoft Windows....." up at the top of the screen and "Safe Mode" in the bottom corners, but that's it.

Any ideas?

 

chkdsk

I have a Western Digital hard drive and also have the "Data Lifeguard Tools" CD that came with it. When I boot from this CD, it says...

1. FD 1.44 MB system type -(00)
starting Caldera DR-Dos

Singe stepping configuration files...
install =A:\xman.exe [Y,N,R]?


Am I on the right track???

I do not think I have the Dell Diagnostics available when I boot up.

 

Dimension 2350