I don't think it is doing that.
Reason I say that is because it's not doing a POST test. The 1-3 minutes is what it takes for anything to happen, including the POST test.
There is nothing on my screen, it's 100% black, no text, no nothing, it's light is amber/orange/yellow(whatever color you want to call it), meaning it's not receiving a signal from the computer.
The post test happens after those 1-3 minutes. I know there is a quick post, which my computer is set to do and then the non-quick post which obviously takes longer by just the name. But it's not that.
Not trying to sound rude, just trying to explain in more detail what it's doing.
EDIT:
Forgot to mention, this happens every boot up ever since the PSU change. Since then I have changed the Video Card. I have changed my HDDs but that happened before this long boot up process started.