I have seen this issue when machines tend to overheat due to a hardware issue. Also, does this issue happen when on battery power, charger, or both?
Also, is there anything specific you are doing when the event happens?
Ahh Gotcha, Lets try to run some diagnostics on the machine. If you power it off, then power it back on and press F10 at the logo screen it should start the UEFI diagnostics tool. From there follow the instructions on the screen to run the diagnostics. These diagnostics are different brand to brand if there is an option to run full diagnostics run that, if not we will need to run each test one at a time.
Run the extended test. It is a bit lengthy so you may want to plug the power adapter in.
Ok, Let me know the results of the tests.
Ok, the next step would be to navigate to this link and download and run the ThinkVantage System Update tool, update any drivers it requires for your system. I know that sometimes drivers that require updates can also cause the issues you are having.
Sounds good let me know the results. :)
From what you have explained, I would say the problem is corrected. Give it another day or so before you decide to close this request just in case. Let me know if you see any further issues by Wednesday this week. :)