A new board would need a new Windows 7 install. You left out if this is some Windows 7 from another PC. That would me guessing.
Remove the guesswork so folk can give you their best answers.
I,m getting this when booting new build
The current BIOS setting do not support the boot device
It then advised me to go to advanced > boot > CSM Parameters, and adjust the CMS settings to enable the boot device. I tried everything I could think of with no difference. I,m running windows 7 and a Asus M5A99X EVO R2.O motherboard.
Any one no what I should do. Thanks