Ok my friend's computer is using a Pentium 4 processor, but it requires PC-133 SD-RAM, I only have PC-100 ram to put on it, but I put the ram in and all, and all it does when I start up is make 3 beeps and doesn't start up, but when I take the PC-100 ram out it goes fine. What can I do to be able to use the PC-100 ram?