How to change primary hard drive?

[willclarke]

When i built my new computer i recycled my old hard drive. However this was 32 bit and in order to use my 4gb of ram i needed a 64 bit. My new hard drive came today and i installed windows 7 but when i connect my older hard drive it reverts to windows 7 32bit with all my settings on.

Is it possible or how do i change my new harddrive to primary?

 

[howardp6]

I would check the boot order in the BIOS, it appears when you have your old hard drive installed you are booting from it and not your new hard drive.

 

[nocheese]

Yeah, boot order. You have to designate, within the BIOS which drive to try first when booting up.