Win XP – disk boot failure please insert system disk

I reinstalled my win system and when i had done that i booted my computer and then this message came on my screen; Disk boot failure – please insert system disk.
So i can’t log onto my computer without the CD.
I ve tried to reinstalled a couple times but, booted the bios but nothings working.

Anyone know why – and know how to fix it?

Thank u

Markus!