Help, Windows 7 won't boot up

[balmo]

I just finished my new build:

CPU: Phenom 2 x4 956 BE
Motherboard: Asus M5A97
Memory: Patriot Sector5 8GB 1600MHz DDR3
HDD: WD 5900rpm 1Tb
Video card: MSI R5450 1GB DDR3
PSU: Cooler Master 500W
OS: Win7 Home Premium

I was able to get to Asus UEFI BIOS to change the boot sequence so I can install Win7. It did install. But after a reboot, it goes black screen. I do see the Asus screen (Del to go to BIOS) but after that the screen goes black.

Interestingly though, if I go to Asus UEFI BOIS right after booting and manually select to boot with HDD the Windows 7 it will load up Windows okay. It just won't load Windows by itself. I already have changed the boot sequence to HDD first in the UEFI BIOS so now I am stumped. Any help is appreciated, thanks.

 

[WR2]

Hello balmo;

Why was it necessary to change the BIOS to install the OS in the first place?
Have you thought about resetting the BIOS to default?