You've got a unique problem. Even all-knowing google doesn't know anything about "OPTIONS-ROM COULD NOT BE FOUND" Or possibly your problem is not unique, but you didn't put the right message in your post. Only you can check.

On the face of it, it's a problem with the motherboard or the BIOS. So I'm thinking you need a new motherboard, which - for any PC still running XP - more or less is the same as a new PC.

But I might very well be wrong.

Kees