Thread: Miserable time setting up Asus M4A78 Pro

Processor: AMD Phenom II X4 Deneb
Motherboard: Asus M4A78 Pro
Memory: G Skill F2-8500CL5D DDR2 1066- 2X2 GB sticks
Power: Rosewill RX630-S-B 630 watts
Windows Home SP2

First I couldn't get to boot at all. I did a very basic set up. Ide HD, and CD Rom. Memory, and monitor only. Originally had situate 1 stick DIMM A1, along with B1. I could get into BIOS, but that was it. BIOS did not recognize HD, or CD. Thinking that the RAM might be the problem, I removed stick from DIMM B1. Same problem. I later tried the stick that had been in DIMM B1, moved it to A1 by itself and got it to boot once. Re-entered the BIOS to confirm I was booting from HD. Even though the HD was recognized as Primary Master, it was not integrated in the boot menu. When trying a restart I got the note that I needed to slot in correct boot device. Now I am finally lost. Memory on post is being said to be 800 MHz engaged, whatever the hell engaged means. I haven't done a build in about 4 years, so I am kind of out of touch. Any and all help greatly respected.
PS My USB backup drive was also recognized.

Have you tried Sata HDD? Im not certain but it seems to be the irritation for newer motherboards (not only Asus) where IDE devices are served by detach controller as a substitute of the Southbridge. Did you tried installing operating system to boot from HDD