Two things:

• Intel Management Engine does not cause DPC Latency issues.  
• With DPC Latency THAT high, you won't be able to effectively work on anything audio related (regardless of the speed of the machine or quality of audio interface).

Is HD audio running through the video cards audio HDMI...?
 
That caused all kinds of problems with my old setup with DCP and audio dropouts, and sonar loosing my audio drivers....
 
I went nuts...trying to solve that...Until Creg said something about it on one of his post to turn it off.
 
So give it a go.
 
Also in bios there are some things you need to turn off...Has to do with speed step, and VT...
 
Try that if you will.
 
And Alex...now I know you are Hiding in muse as Dokotor....Please do not dis this process, or argue it with me....it may help...it may not
 
Try as it may be a solution I found to work here...a bit too late for the old one...But does solve on the new one.
 
Oh, and if you feel Firewire is not performing so great with your system....Try a Thunderbolt 2 card, and adapter.
 
Solved many issues with wi fi and internet onboard nic here also....And I do not know why..but it did do that for me, helping me use any buffer I need to use...and not be locked at the most highest one, and as you a special asio mode 1...other than normal or lowest.
 
 
 
Wink.

Intel management - In add/remove programs. There is probably all sorts of stuff in there you don't need. Intel is a classic example

Sir Les
Is HD audio running through the video cards audio HDMI...?
 
That caused all kinds of problems with my old setup with DCP and audio dropouts, and sonar loosing my audio drivers....
 
I went nuts...trying to solve that...Until Creg said something about it on one of his post to turn it off.
 
So give it a go.
 
Also in bios there are some things you need to turn off...Has to do with speed step, and VT...
 
Try that if you will.
 
And Alex...now I know you are Hiding in muse as Dokotor....Please do not dis this process, or argue it with me....it may help...it may not
 
Try as it may be a solution I found to work here...a bit too late for the old one...But does solve on the new one.
 
Oh, and if you feel Firewire is not performing so great with your system....Try a Thunderbolt 2 card, and adapter.
 
Solve many issues with wi fi and internet here also....And I do not know why..but it did do that for me.
 
Wink.

Les fairly sensible advice but should be done last. However if CPU in windows power options (min/max) is set to 100% for both you don't need to disable speedstep. All you need to do is disable the HDMI drivers in device manager.

The main issue right now is intel management crap...

Jim Roseberry
Two things:

• Intel Management Engine does not cause DPC Latency issues.  
• With DPC Latency THAT high, you won't be able to effectively work on anything audio related (regardless of the speed of the machine or quality of audio interface).

... I've seen it bring PC's on their knees several times now, also other intel bloatware. Some of it is necessary but most of it is not. Management definitely isn't.

It is only really needed if you want to manage multiple PC's on a corporate network.

So whether you agree or not there is no harm uninstalling but as I say, always back up.

This could easily be the root cause of the problem.

Ok .  I ran that (latencymon) overnight.  The interesting thing is for the first 20 minutes it seemed ok. but after 10 hours it gave me the same report. 
   I am using the onboard video.  so I am not sure about had audio 
Thanks everyone

onboard video...That is a problem, I believe also...memory issues?...hmmm.
 
I would ask you find a low cost video solution with at east 1 meg of memory on it.
and turn that onboard video off in the bios.
 
And set up the video card to not use HDMI if you do put a card in to replace onboard video .
 
And, just to test...turn off all internet, wi fi, through the bios also , if  you got that on that MB board, and test that.
Not sure what Alex said about being the last thing to do....I setup my system first...then do the testing.
 
Never had to uninstall Intel anything yet...But, I do not know about that tweak...(thanks Alex)..Some one told me we do not have to tweak anymore.....Eh...that reminds me of some one..lol.....wink....I see some of my practices may have rubbed off?....
 
Just setup for audio the PC..."lean and mean" as you can get it....then run the dpc tests...see if it helps.
 
Reason = irq being freed up so windows does not share with X.
And or loading services for those devices....if not done in Bios, the driver will still load up in windows, and some services for them, start up...and stay on even though you disable in Device manager....
So I do the Bios ...and no drivers get loaded or sought for...by windows...and no services are run at all.
 
You can get a 5450 1 meg ati card for about 30 bucks these days....Helps with the freeing up of system memory.
But some might say Ati is crap...so there are Nvidia cards about the same if not better for the same price or a bit more...
 
Hope you find bliss.
 
 

Quick clarification on LatencyMon - The bottom bar on that first screen is "Reported total hard pagefault count" and is a cumulative number. LatencyMon itself adds latency, so that bottom bar will go into the red (something like >100 total) if left running for long periods. That particular bar is not as meaningful as the others (if you can pull <100 pagefaults in 24 hours, that is Guiness Book of World Records material). On the "Main" tab, the top 4 bars are what to watch, but remember that LatencyMon is also contributing to them.
 
While LatencyMon is running, if you click on the Process/Drivers/CPU tabs, the columns can be ordered numerically by clicking on their headers. Processes->Hard Pagefaults and Drivers->DPC count/ISR Count are the most useful, when tracking down things. CPU 0 will probably (always?) be the highest offender, because Core 0 is also the "Windows workhorse" (all machines have a Core 0, not all have a Core 8/12, etc.). Comedically, SONAR gets to be Windows' scapegoat because people watch core loading in SONAR, and rarely check it with SONAR not running. Point here is using those tabs, you can write down/research the highest offenders.
 
Another caveat to the above - some processes are called by other programs, so it is not always "cut-and-dry" finding them (most are, but a handful are not).
 
Regardless of the above details (colors/numbers), you want to simply get the green message on the main screen "Your system appears to be suitable for handling real-time audio and other tasks without dropouts." and audibly not have any pops/crackles, etc. while running your DAW.

thanks  onboard video is a problem  hmmm

Did you remove the intel management engine? I can't stress this enough...
No doubt you may have been supplied other bloatware in add/remove programs.
Do you have screenshots of latency monitor drivers tab?
Another thing is download something like process explorer and process monitor (latencymon first though).
 
Thanks..