My computer restarts without automatically

My computer restarts without warning

This issue can be cause by many possibilities e.g software issue, Hardware issue, computer virus or with operating system

                           To solve software issue

1. First on  the Desktop right-click on My Computer.
2. Click the Properties option.
3.  Then go to the system Properties windows then go to Advanced tab or the Advanced system settings
4. In Advanced click the Settings butoon under Startup and Recovery.
5. then in Recovery window uncheck the Automatically restart check box.
6. press ok   

           Hardware issue

Any new hardware component in your system can also cause your computer to reboot without warning. If you recently added a new hardware device, remove that device to make sure it is not causing this problem

New drivers can also cause this issue, if you have recently performed any hardware driver updates then you need to try an earlier version of the driver

               Cause of heating

Now many systems are designed to turn off or automatically reboot if the system, processor, or other device in your computer gets hot. If you hear a noise from your computer you need to check that all your fans are smoothly working in your system, especially first of all check your power supply fan, then processor e.t.c