System Freezing from fresh Boot or Sleep after a several minutes.

And I asked for recent dumps, meaning from the latest crash in this case.
Have you configured the dumps as shown in the tutorial?

Please do the following:

• Open taskmanager
  
  • Go to the tab startup
  • disable everything
  
  
• Search msconfig and open it
  
  • Go to the tab services
  • Check 'hide microsoft services'
  • Uncheck all other services
  • Click apply and click ok
  
  
• Reboot if asked

See if the problem persist, if the problem does not persist enable in the startup tab in taskmanager 1 item and in the services tab in msconfig also 1 service, reboot and see if the problem persist. Keep doing this until you find the culprit or there is nothing left.

I would need more information to determine the cause of why there are no dump files created.
But there are a few things to check.

Please try following:

• Open an admin command prompt
• Copy/paste "sfc/scannow" (without quotes) and press enter
• When it finished reboot your system
• Open again an admin command prompt
• Enter sfc/scannow again

If sfc/scannow does NOT say "Windows Resource Protection did not find any integrity violation", please upload the cbs.log file located at {windows partition}\Windows\Logs\CBS\, if the file is too large try a 3rd party uploader like dropbox, onedrive, google drive, mediafire etc.
System File Check(SFC a.k.a. Windows Resource Protection) needs to have your system rebooted in order for sfc to try to fix the problems that it finds.

Please do the following

• Open control panel and click system
• Click on advanced system settings at the left side
• Click on the tab advanced if you are not there
• Click on settings in the part Performance
• Click on advanced
• Click on edit / chance

Please make a screenshot of the tab virtual memory it and post it.

Btw, what error did you get when the crash occurred?

That explains it, a system freeze is not the same as a BSOD.

Please remove and reinstall Chrome to see if that helps.
When removing, choose to remove everything, enable synchronisation if you don't want to loose personal/business settings, extensions and bookmarks.