Strange Random And Sudden Power Cuts On Laptop

I seem to be having crashes on my laptop as of recent, but the patterns they follow are very strange. It's almost like i'm getting a BSOD while it being used, but instead the screen just go black and all power cuts. It then reboots and starts up as usual. As far as I can tell there is no conflicting software causing this, and it happens without any pattern. Since there is no Blue Screen, I cannot give a dump file. However, on the even viewer, I see an event labeled under the critical category. Now this seems like the CPU or other internal component is overheating, But when i look at HWMonitor Pro, the CPU stays under a steady 84C under load and 60C idle. This happens in a range of occasions such as rendering videos with Handbrake to simply browsing the web. I will say this, I recently swapped out my RAM cards because the OEM one's were causing BSOD's about a month ago. If you'd like more specific information on the laptop, visit my old thread.