I don't believe that this even has anything to do with the cause of your issue. Event Id 56 is described as follows: "The Terminal Server security layer detected an error in the protocol stream and has disconnected the client". I believe that this is more of a consequence of the issue.
There is an errata that affects both Skylake and Kaby Lake Core processors (and all derivatives). This errata can cause issues when Hyperthreading is in use (and you have a hyperthreaded processor). Intel released new microcode that fixes this errata. By now, I would expect that all board vendors would have released new BIOSs that contain this microcode. I would make sure that you are running on the latest BIOS available for your board and, if the release notes for this BIOS do not indicate that they include the new microcode, you should contact your board vendor and find out whether they have done their jobs and released a new BIOS.
Hope this helps,
Thanks for your reply, i will check right now for the bios update,
i will update this post afterward to see if the bios update fixed the issue.
UPdate: you are correct, there's a bios update that update, luckly for me bios update for my motherboard a quite simple ( that will be my first time flashing a bios )
SaberTooth z170 mark 1
sadly i still have the issue, i have no idea where it's coming from.. the good and the bad news is that i no longer have the event id 56 critical error.. meaning that i now have no more lead to where to look for the issue,
I've notice that i have screen flicker when launching a full screen app, with the sound of plugin and unplugging peripheral,
i know it might no longer be related to the cpu but do you know how to diag a power supply or a graphic card?