Pc won't autmaticaly boot off HDD

[Finns14]

So when the computer turns on I am prompted to go into the MOBO setup. From here if I select to boot off of the HDD windows 7 will run no problem. Any ideas how to fix this? I know boot priority is in the right order, and I am using a an Asus P877-V motherboard. Thanks.

 

[JackMDS]

Assuming that the Boot cue is configured correctly.

Do you have any external USB drive connected all the time?

If there is one try to disconnect it.

 

[corkyg]

Second Jack's suggestion. I have a system that has three identical boot drives - but only one is ever ON at a time. There is a USB data drive (external) common to all three boot drives. When I switch drives, I must turn off the external drive for the first boot. As soon as Windows starts loading, I turn it on. Subsequent boots all behave normally, and I can leave the extyernal drive ON.

I have the correct sequence set in boot order in BIOS, but for some reason, the system tries to boot from the external if on for the first boot. I just go with the flow and do it "its" way.