[computer-tech-support: 7610] Trouble installing Win.7 64-bit Full Version

I have a home built computer using

Ga-P35-DS3L rev. 2.0 Mobo. http://www.gigabyte-usa.com/Products/Motherboard/Products_Overview.aspx?ProductID=2629
Intel Core 2 Duo E8400 CPU http://ark.intel.com/Product.aspx?id=33910
4gb DDR2 Corsair RAM (4 Sticks.) http://www.newegg.com/Product/Product.aspx?Item=N82E16820145590
ATI 4870 GPU Driver 8.753.0.0 (Catalyst 10.7.)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150436&cm_re=ati_4870_1gb-_-14-150-436-_-Product
4 HDDS 3 WD SATA and 1 WD PATA slaved to my
Phillips DVD8631 DVD RW
Onboard sound and ethernet.
550w Power source
Microsoft wireless mouse and keyboard.

I included everything because I have no idea what's wrong. I have
successfully installed win. 7 Home Premium 32-bit but am unable to
install Win. 7 64-bit. I have tried installing from both the internal
DVD and a USB DVD. I can't get the flash drive to install. The system
will prompt me to "Install from DVD?" Press any key... Then I will go
to LOADING FILES and then will get a Boot Manager Error. "This may be
caused by a recent change in hardware or software 1. Insert your
installation disc 2. choose language option and 3. click repair."
Status 0xc00000F7. I had windows xp 32 on the computer before this.

I reformatted my HDD before the install. I have removed and moved
memory sticks down to 2gb's. I have burned a new windows 7 Home
Premium to both DVD and Flash drive and they both have successflly
booted on other computers. I have flashed the bios to version F9
using @Bios. I have updated my chipset drivers as well and any other
drivers using Driver Detective. I have run virus scan using MBAM. I
have removed all HDD's trying to install on a single, different
harddrive. I also got a response in broken inglish from gigabyte
telling me that my motherboard should be fine to run a 64-bit OS.

I have absolutely no idea what's wrong fif anybody has any ideas I'd
love to hear them.

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