Starts up, may get to desktop, then turns off.

Accessing Advanced Start-up when PC isn't loading:

If your device isn't loading or stuck during boot, you can use this method to access the recovery environment:

1. Turn on your PC.
2. As soon as the Windows logo appears on your screen, press the power button to turn off computer.
3. Repeat steps 1 or 2 two more times.

After the third interruption, Windows 10 will open into the Advanced Start-up environment

·         While in the Advanced start-up environment, use the following steps to use Start-up Repair:

1. Select Troubleshoot button.
2. Select Advanced options button.
3. Select the “Start-up Repair” button.
4. Select your account.
5. Type your account password.
6. Click the Continue button.