Windows & install problem

I am having trouble installing Windows 7 Pro.

I have a nearly new, barebones computer. It was working properly and then started performing much slower. I have assumed that it is the hard drive packing it up. So, time to move on. 

I have a 1 TB SATA drive and also a smaller IDE drive. The previous drive was a SATA.

I installed the SATA drive and have attempted to reinstall Windows 7. I have Windows on a CD and on a flash drive. Neither work when booting. So, I divert into the BIOS on startup and designate where to go (cd or flash). It seems to try to attempt to read the drives, but then I get the same message. “Reboot and select proper Boot device or Insert Boot Media in selected Boot device and press a key” I hit enter and the same message keeps coming up regardless the fact a CD or flash with Windows is available.

I have tried the installation with both SATA drive and the IDE drive and get the same result.

I am quite sure that the install program is fine as I have put them in other computers and they come up with the install screen.

Any ideas what the problem might be?  Anything else I can test?