Windows 10: Laptop random hard restarts

My laptop keeps randomly hard restarting. Full blackout, powerdown, then boot back up like nothing's happened. I've looked through Google to try and find a solution, but they all relate to similar symptoms with different errors, many of which don't have accepted solutions.The laptop is a Lenovo IdeaPad Flex 5 14", the Ryzen 7 5700U SKUWindows 10, 21H1, build 19043.1706The reboots happen very sporadically, sometimes twice in a day, sometimes not for weeks. It's never when I'm doing anything all that tasking on the computer, usually just browsing twitter or reddit, I have stressed it with a game

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random restarts

Hi,

If a Windows computer random restarts, the device usually have some damaged system components. For us to provide an accurate solution, we would need you to answer the following questions:

• Which build, version and edition of Windows is installed on your computer?
• What changes have you made to the device before this issue occurred?
• What troubleshooting steps was already performed to your laptop?

In the meantime, it will be best to make sure that the latest update of Windows is installed on your device. If the same issue happens after installing Windows Update, we suggest running the power troubleshooter. To do so, follow these steps:

• Open the Control Panel.
• Using the search bar at the upper-right corner, type troubleshooting.
• From the search results, click on Troubleshooting and then select System and Security.
  
• Click on Power and then follow the prompts to successfully run the tool.

We are looking forward to your response.

 

Laptop random restarts

Really obnoxious problem here so any help is great help.
My laptop (msi - 1761) randomly restarts. And when i say random i really do mean random. Sometimes i will go a couple days of heavy gaming with no problem, other times im just browsing the internet and get these restarts. Now these aren't your normal restarts. When the laptop spazzez out it shuts down like i powered it off. Everything goes black, lights off, everything. Then it turns itself back on. Doesn't say anything during boot. Windows starts up just fine as if nothing happend.

Back history - i've ran a RAM check, it all comes out OK. A hardrive check and all comes out OK. I thought at one point something with windows had corrupted, so i formatted my HD and within 5 minutes of a clean copy of windows being installed it restarted.

TEMPS - i've ran a couple programs that keep track of booth cpu and gpu temps. Range between 40-80c. For example, skyrim plays around 81c. Turned the game off and let it sit for an hour or so, turned the game back on, laptop restarted at 68c. So its not a temp related problem.

The laptop has never restarted on just battery. It has only happened when the adapter is plugged in. I've had the adapter checked and it is sending its 19.5v just fine. However im thinking the brick is bad.

in my event viewer im not seeing anything crash before my laptop restarts. I do get this critical thing though
"Event 41, Kernel-Power : The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."
I just want to see if anyone else has had this problem and if there is a fix that wont cost me $60-80 for a new adapter.

I've been back and forth with xoticpc tech guys, nice guys, very knowledgeable, but we couldn't figure it out. Thanks for taking a look. Hope to get this figured out.

 

Hard drive/ OS issue

a guy suggested :

• shutdown
• unhooked HDD
• restarted
• yay !!
• reconnected HDD
• restarted
• yay !!

also , try method 3
How do I unlock the drive where Windows 10/11 is installed?