I have to hard drives, (one in place of the dvd drive (7200rpm 1tb) for samplesthe system hard drive is the stock one, I haven't changed it out yet... Not sure that would cause so many pops, clicks, and messages about the computer being to slow to play back. Just a few things from my experience with laptops.
First, it looks like you have your DPCLAT under control. But I imagine that is the report when your laptop is sitting idle. I would also run the test with Sonar open.
To bad the old Thesycon latency checker doesn't support windows 8, (it will read a false 1000us). I liked the way you could leave it running as you messed with things.
The OS drive (? you don't give details) might be the problem as well, 5600 RPM laptop drives are a well known issue.
Also is it more than 50% full ?
If it were me I'd either use the 7200 drive for all my projects or swap out the original drive for a SSD.
Also , your interfaces situation. First, don't use the M Audio fast track, I owned one,, It is a turkey, it was designed for W XP and I doubt stability with W8.
The Pre Sonus will have better drivers , but even they are reported to be so so, Reading reviews shows you'll need to keep your buffer size above 256 and possibly higher.
Double ,double check that you are using the Presonus as your timing master and in ASIO mode in Sonars preferences.
I see the Focusrite is only a headphone gizmo, don't hook it up while testing. There is an issue with it because you cannot use 2 ASIO devices at the same time. Deal with that later.
One last detail that you might not want to hear, There are certain laptops that will just not work at all for audio. It's due to the BIOS and nothing can fix this. My son bought a top of the line Dell for audio and had this issue. He could not return it because it was technically not broken. Audio is not on the radar of companies making computers.