Unable to Windows 7 Enterprise

I upgraded my HP media center m8226x
#MO Gigabyte H61
#Intel i3 3.1MHZ
#4GB stick

I had Windows 7 Ultimate
Formatted the hard disk Hp @7200RPM
Try to re install windows 7 Enterprise and Ultimate ( downloaded from MSDN Subscription, I am a msdn subscriber) used IMGBURN to Build the image I was getting "NTLDR is missing error"

I tried the following
1.I used Windows & recovery disc try to install Windows 7 from the command prompt
What I got is "Cd/DVD Driver is missing" ,I changed the SATA mode from IDE to AHCI same error
2.I reseated everything tried same "CD/DVD driver is missing"

3.I tried with Windows XP repair disc and I could get the NTDETECT.COm,Boot.ini and other bootable files
and copied into c drive then tried with Window 7 Installation CD "NTLDR is missing error"

CD/DVD drive is detectable
What the hell is wrong I don't know
If anyone see a problem ,just beat me with your answer

I tried too it did not work @ 4X Speed

Try cleaning the HD first:
SSD / HDD : Optimize for Windows Reinstallation

I cleaned up the HDD,I tried with Windows 7 Enterprise OS
This is the error message i got
"Disk Boot Failure ,Insert System DISK and Press Enter"

downloaded from MSDN Subscription
Even I built an image with a windows 7 Recovery + Windows 7 Enterprise OS in a single tried that I did not work
Tried different brand DVD still no sign