Computer sees new hard drive in System recovery but not is Bios

I replaced my hard drive, when I go to startup repair screen and select computer it shows my new hard, C: with X: labeled as boot, however when I check my BIOS it does not show my new hard drive. Also when I try to boot from hard drive I receive the BOOTMGR missing error, I have tried all of the Boot fixes on this forum and I am thinking that I am over looking something really simple. My computer will boot from cd, under system recovery shows no OS or location. I have a Compaq CQ57 and I replaced my Hatachi hard drive with a Western digital but it is the same gig and speed and both are sata. I would appreciate any help in this matter.

Thank you

Post a screen shot of Windows Disk Management if you can boot at all.

You replaced a Hitachi drive with a Western Digital.

Did you attempt to reinstall Windows to the Western Digital or did you attempt to copy Windows from the Hitachi to the Western Digital?

Your explanation isn't very clear so we need more details about how you "replaced" one hard drive with another.

however when I check my BIOS it does not show my new hard drive

If the BIOS does not recognize the new HDD it's pretty certain no Operating System will see it. Windows and other OSes read the BIOS to determine what hardware or resources on the motherboard are available. Since you can boot to a CD try downloading the free GPARTED .iso file and use a burning program to burn the image, not the file itself, see if it knows about the drive. You can create and format a partition or a couple from that disc. The OS on the disc is a version of Linux.

An .iso file is an exact image of the original disc, quite useful for downloads when the original disc is not available..\
GParted -- Download