If booting from the floppy doesn't work, you can try:
Take out any PCMCIA/PC-Card cards or PCI cards.
Try disabling Plug-And-Play in the BIOS
Then try to reboot.
What to do if the computer boots, but the window system fails
If the system freezes when it tries to brings up a window system
with the mouse, press Control-Alt-Delete and then try to boot again.
This time when you get the "Boot" prompt, type
linux text (so the
window system won't be used):