I have encountered a desktop computer keep restarting without any notice or message telling it is going to shutdown. It just get kick off from desktop and restarting itself. So, i searched about this issue and asking around the technician mans, and finally got some answers why the computer behaving like this., and how to deal with it.
1. The hard drive is not working perfectly.
So, if able to enter into safe mode, use the Command Prompt run the checkdisk command: chkdsk /f /p /r /x c:
This command will check the hard drive structure, and takes quite some time to finish, almost 1 hour or more, depending on hard drive size.
2. The Memory RAM is not working perfectly.
In this case, turn off the computer, open the desktop and remove the memory banks, clean them and put it back, one at the time. Then turn on the computer and if everything goes OK, turn it off and put the other bank.
3. The computers processor is getting too hot.
To check on this, enter to BIOS during boot (usually by pressing Delete, F1 or F2 when the computer just starts) and check on an option about the "Computers temperature" (usually under “PC Health”).
1. The hard drive is not working perfectly.
So, if able to enter into safe mode, use the Command Prompt run the checkdisk command: chkdsk /f /p /r /x c:
This command will check the hard drive structure, and takes quite some time to finish, almost 1 hour or more, depending on hard drive size.
2. The Memory RAM is not working perfectly.
In this case, turn off the computer, open the desktop and remove the memory banks, clean them and put it back, one at the time. Then turn on the computer and if everything goes OK, turn it off and put the other bank.
3. The computers processor is getting too hot.
To check on this, enter to BIOS during boot (usually by pressing Delete, F1 or F2 when the computer just starts) and check on an option about the "Computers temperature" (usually under “PC Health”).
Right here should show the current temperature of the computer together with the emergency shutdown temperature. The emergency shutdown temperature is a safeguard for when the computer gets too hot and will shut itself down to prevent damage.
In this case, usually we will either raise the shutdown temperature or switch it off completely, however be warned that you may damage the computer if the computer gets too hot. If the temperature was causing the reboots then you should consider getting better cooling for the computer such as more powerful CPU fans and more case fans.
4. There is a problems with BIOS.
Usually this is a problem with no easy solution, and personally I never goes so far, and never done before.
If with steps above still could not get into desktop, maybe should try on "system restoring" and scan for viruses/spyware. And if system restoring also can't solve the issue, then I suggest to "Format" the system to get a fresh one.
However, to disable the automatic reboot for the computer, you can disable it by following below steps:
1. Right clicking on “My Computer”
2. Choosing “Properties”.
3. Goto the “Advanced” Tab
4. Under “Startup and Recovery” press the “Settings” button.
5. Un-check/un-tick the "Automatically restart" under the System failure at bottom.
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