Random crashs and freezes with Kernel-Power error ID 41 (63)

Hi, i'm getting random crashs and freezes (with the need to reboot), on a new computer. I already ran the memtest 86, no errors, and i can't seem to solve the problem. Sometimes it happens with the chrome in twitch.tv and sometimes in the desktop without doing anything. For some reason it's not saving a dump file, even though I've put it to create. Thanks

Here's the error in the event log:

Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 02/07/2016 02:06:56
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (2)
User: SYSTEM
Computer: ArthurBrener-PC
Description:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />
<EventID>41</EventID>
<Version>2</Version>
<Level>1</Level>
<Task>63</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000002</Keywords>
<TimeCreated SystemTime="2016-07-02T05:06:56.944409500Z" />
<EventRecordID>1367</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
<Computer>ArthurBrener-PC</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="BugcheckCode">0</Data>
<Data Name="BugcheckParameter1">0x0</Data>
<Data Name="BugcheckParameter2">0x0</Data>
<Data Name="BugcheckParameter3">0x0</Data>
<Data Name="BugcheckParameter4">0x0</Data>
<Data Name="SleepInProgress">false</Data>
<Data Name="PowerButtonTimestamp">0</Data>
</EventData>
</Event>

Edit: watching stream (twitch.tv) crashes the PC in like 1 min, and watching youtube doesn't seem to crash. I already tried disabling hardware accelerator in Chrome config.

Edit2: actually it crashes on YouTube as well, and if I let the PC idle (leave it without doing nothing), it also crashes

Please read BSOD Posting Instructions & How to upload files

Please fill in your system specs

Please follow this tutorial and download the tool. The tool will give you detailed information about your system specs, please fill in your system specs more completely including PSU, cooling and other used stuff like mouse, keyboard, monitor, case, etc.
The PSU, cooling and other stuff are NOT mentioned in the tool.
How to fill in your system specs:

What PSU do you have? 650W is not enough to know.
What peripheral do you have?

Please uninstall everything of Nvidia using Display Driver Uninstaller and install new drivers from Nvidia. Be sure the clean install box is checked and only install the Graphics driver and the PhysX driver, you can use this tutorial to do so NVIDIA Drivers - Avoid Problems
Attachment 389020

Code:

fffff880`089fc148  fffff880`0f71946d*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
 nvlddmkm+0xea46d

4: kd> lmvm nvlddmkm
Browse full module list
start             end                 module name
fffff880`0f62f000 fffff880`1034b000   nvlddmkm T (no symbols)           
    Loaded symbol image file: nvlddmkm.sys
    Image path: nvlddmkm.sys
    Image name: nvlddmkm.sys
    Browse all global symbols  functions  data
    Timestamp:        Fri May 20 03:25:49 2016 (573E679D)
    CheckSum:         00CD7F80
    ImageSize:        00D1C000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

About the peripherals I meant the mouse, keyboard and headphone. I've updated my PSU, just found the model...
And i'm reinstalling the NVidia Drivers. Thanks!

Already did the clean install and only installed the 2 drivers.

Understandable, but crashes other than BSOD can be difficult to troubleshoot and we focus on BSOD crashes as the title of the forum says 'BSOD Help & Support'.
Why BSOD's only? Only a BSOD crash is caught by Windows, a BSOD crash is a crash to prevent (more) corruption that occured somehow, it is why I call it the 'only real crash'.

Each problem has its own solution because of the variety in system build, software and drivers. This is also why in many cases a new thread is requested for a problem, pretty much never is a problem the same even when the symptoms look similar.

With shutdown/restart problems the first step is to test the PSU, cable connections, seatings, damaged component and 3.3v, 5v and 12v values, a.k.a. ruling out the hardware where you need to start with the power supply.