My desktop restart frequently

[AmodRimal]

My Pavilion all in one computer 24-b229c - Z5M7BAA#ABL restart frequently even I have unchecked the Automatically restart option from system property. I used Troubleshooting and fixes from HP Support. It didn't help either.

[Fanordi]

Hello, when your computer reboot automatically, do you have the rebooting screen or is it a black screen and next the HP logo?? 

For check if you have an hardware problem you can execute an hardware test in your computer. For this, restart your computer by tapping F2 when it is been down for restart. You come in HP Hardware Diagnostic Interface and can execute all tests. If you have a fail please tell us. 

For more information about HP Hardware Diagnostics please see this: 
https://support.hp.com/us-en/document/c03467259