Windows 7 boot sector can not find boot sector on first try on ssd drive

[swager]

Why is it that my SSD drive will not boot up ( has OS install on it ) ..... sometime the bios knows it is there and other not. Most of the time I have to boot by pressing F12.

 

[unreal9400]

Enter the bios, usually Delete key or F2.
Usually the CD/DVD is set to boot first.
Change the boot order so that the SSD boots first.