|"says detecting array"|
"now it won't boot"
Your mboard IS booting fine, otherwise you would NOT see any messages !
"After searching for your Emachines W3118 I see there is no provision for any type of RAID on the motherboard."
According to this third party web site, this is your mboard:
FIC K8MC51G Mainboard
There is NO mention of RAID support there,
or here on the FIC web site:
FIC has no manual for it.
What system is the hard drive from ?
The emachines system, or another one ?