3-4 min.  I have roughly a million (give or take) programs installed on my DAW..which serves as my general all around PC  PC. 

Have you tried launching msconfig and selecting "selective start up"? You can disable some or all programs that auto-loads. It's a easy way to identify which program is causing the delay if it's software related. Once the program is identified you can select normal start up. It's a neat little diagnostic tool.

About 30-45 Seconds from power to play, I also have a dedicated ADK DAW that has never been on line since I bought it.

Have a look and better yet back-up your registry and see how big of a file it is. That usually plays a pretty big role in boot time.

I think mine is about 20-25 seconds

Takes about 30 seconds to start my machine, about 1.5 starting Sonar 8.

not long