If you've recently connected a new peripheral to your computer (mouse, monitor, keyboard, etc.), you need to switch off your device by unplugging all peripherals.
Once you've done this, you can turn your computer back on and check that it lights up.
If you've replaced or added a component inside your PC, you need to disassemble your computer and remove the last component added: an SSD, a RAM strip, a fan, etc., to check that this new part isn't the cause of the fault.
Then restart your PC.
If the problem persists despite all these attempts, you'll need to install Windows 10 again,
- On another PC, go to the Windows 10 download page
- Download Media Creation Tool
- Choose the option Create installation media for another computer
- Click on Next
- Use either a USB key or an ISO file, which you can then transfer to a DVD.
You can now reinstall Windows 11 on your device.
- Check the state of your fan, as it may be faulty or dusty, causing your device to overheat and restart unexpectedly.