poetnprophet
I do not know how to check system logs or how to test memory, if anyone has a dummy-version walk through, please do share.

I am so sorry to hear about your troubles and I will also say that it is absolutely ridiculous that any artist user any versions of Sonar is expected to have knowledge of system logs. 
You are a musician and you should have a system which allows you to focus of creativity, not thesis in info tech.

No one said this but I am just as frustrated as you.

With that said, I will strongly advise the following:

1. Do you have a Backup of your system which was working well and you can simply restore to that point?
2. Is it easier to simply go back to square 1? Sometimes performing all these troubleshooting can quickly lead you into a rabbit hole and never ending hair pulling.
3. Sometimes it is just easier to start over.
   
   

I am not saying you should but this is the reason I used Windows Server (another story). I have had crashes but over all, my system is enterprise level stable. And there are extremely limited crap running by Windows itself.

Hope you can find a solution.

AI

You need someone who is PC/DAW savvy to sit down at (or remote session with) your system and troubleshoot it. 
 
Are you in the U.S.?  You might consider calling Jim Roseberry at Studiocat.  He does phone consults for this kind of thing. 
 
http://studiocat.com/opencart2/index.php?route=product/category&path=67
 

Audioicon
I am so sorry to hear about your troubles and I will also say that it is absolutely ridiculous that any artist user any versions of Sonar is expected to have knowledge of system logs.

Don't you mean user of any DAW?  There's no reason to single out Sonar any more than there'd be a reason to single out that he's using an HP or Dell computer....

JonD

Audioicon
I am so sorry to hear about your troubles and I will also say that it is absolutely ridiculous that any artist user any versions of Sonar is expected to have knowledge of system logs.

Don't you mean user of any DAW?  There's no reason to single out Sonar any more than there'd be a reason to single out that he's using an HP or Dell computer....

Given the OP/User is experiencing issues with Sonar my comment is not about "Any DAW."
Why should I or would I comment on Any DAW when the issue here as reported by the OP is regards to using Sonar?
Please go back and read my post and if possible put down the cool-aid first. 

I never said the issue is with Sonar, again, I even talked about using Windows Server.

I wont get sucked into a Cool-Aid driven battle.

I wouldn't worry about every Windows update.. but I would be concerned with... MS Visual + C++
If your crashing before even opening a project this is a tell tale sign.
Find the newest ones on the Microsoft site. (sorry not leaving links) google is your BFF.

Cactus Music
What do you mean it has no drivers? It must. And is not Thunderbolt a known issue with PC? 

I'm using it via USB2/3, I'm not quite sure exactly how it works but I didn't have to download or install any drivers.

chuckebaby
I wouldn't worry about every Windows update.. but I would be concerned with... MS Visual + C++
If your crashing before even opening a project this is a tell tale sign.
Find the newest ones on the Microsoft site. (sorry not leaving links) google is your BFF.

I will check.  I did all the updates yesterday.  It doesn't crash this way every time, but once a day for sure.
So, just check for the newest Visual C++ drivers from MS?

poetnprophet

Cactus Music
What do you mean it has no drivers? It must. And is not Thunderbolt a known issue with PC? 

I'm using it via USB2/3, I'm not quite sure exactly how it works but I didn't have to download or install any drivers.

 
It's funny no one mentioned this as I guess we just assumed you had already done so.
You ALWAYS download and install the latest ASIO driver for all audio interfaces,, this is super critical otherwise you must be using a generic sub par driver. 
http://motu.com/download
 
 
 
 

Audioicon

Euthymia
Have you checked your Windows Update to see if it installed a new driver for anything? 
 

I am just curious. Again for my own knowledge. Do you update Windows, if so how do you run your updates?
I do not run updates and when I do, I simply update very specific things.

What I am saying is, if it is not broken, then don't fix it. But I also understand the importance of updates which is why I am asking.

Thanks!

I have my updates set to download, then ask me before installing them. That way I can go through the Windows Update dialog and see which ones I want to install and do not want to install.
 
For instance, I would not let Windows Update install any hardware drivers, but I do let it update definitions for Windows Defender, things like that that I know are likely to have little impact.
 
And as I was the one who asked the OP if he knew how to check his system logs, I did just that: asked him if he knew. No expectation that he would, but sometimes people do, and if they do, it's a place to check. A Windows System Event Log can show whether something happened in the instant right before the system went kablooie (technical term). If that something is in a hardware subsystem, then you know where to poke around. It could say that the video driver shat the bed (another technical term), or maybe USB, or hard drive or whatever. Maybe there's nothing. I learned about them when I was a Microsoft Certified Systems Engineer.
 
Of course these things should all just work perfectly and we should all be free to use our tools for our art and never have to get under the hood but that's never been the case for all users and it still isn't. Systems as complex as these will go boing sometimes. DAW and video editing software really challenge a PC when it comes to compatibility.

Euthymia

Audioicon

Euthymia
Have you checked your Windows Update to see if it installed a new driver for anything? 
 

I am just curious. Again for my own knowledge. Do you update Windows, if so how do you run your updates?
I do not run updates and when I do, I simply update very specific things.

What I am saying is, if it is not broken, then don't fix it. But I also understand the importance of updates which is why I am asking.

Thanks!

I have my updates set to download, then ask me before installing them. That way I can go through the Windows Update dialog and see which ones I want to install and do not want to install.
 
For instance, I would not let Windows Update install any hardware drivers, but I do let it update definitions for Windows Defender, things like that that I know are likely to have little impact.
 
And as I was the one who asked the OP if he knew how to check his system logs, I did just that: asked him if he knew. No expectation that he would, but sometimes people do, and if they do, it's a place to check. A Windows System Event Log can show whether something happened in the instant right before the system went kablooie (technical term). If that something is in a hardware subsystem, then you know where to poke around. It could say that the video driver shat the bed (another technical term), or maybe USB, or hard drive or whatever. Maybe there's nothing. I learned about them when I was a Microsoft Certified Systems Engineer.
 
Of course these things should all just work perfectly and we should all be free to use our tools for our art and never have to get under the hood but that's never been the case for all users and it still isn't. Systems as complex as these will go boing sometimes. DAW and video editing software really challenge a PC when it comes to compatibility.

Thank you.
I get the point of your question and I was simply speaking in general as to what is expected of a user, especially given most people just want to make music, have fun and be creative.

And you are a very advanced user based on your certification which is a plus.

Maybe you can remote in and help the OP.