Why does my computer unexpectedly restart on its own?

Nathan, this sounds like it can be multiple reasons for the unexpected reboot.

First, are you running a lot of programs at once? You could be experiencing a crash due to the enormous amount of windows or programs running at the same time. Try to run fewer programs at a time.

If this doesn't change anything, you might want to consider additional RAM to your decide to increase performance. Having extra random access for your laptop will provide extra support when your decide has various programs opened at once. With more RAM, your system will be able sustain big files or programs.

Good luck, Nathan.

If your laptop is randomly shutting down without you prompting it yourself, it may be due a defective battery or low RAM. If it is the battery, you can test if it is defective by following the steps in the troubleshooting page under “Defective Battery”. If it is the RAM, you may have to purchase and install additional RAM.

If your system shuts down after being turned on awhile it could be your fan is not functioning. It may be burned out, or mechanically seized up or your thermostat on the motherboard may be malfunctioning. This happened to my system and it turned out to be mechanically seized up,lucky me. Find dismantling instructions , be very careful removing things. The break easily. Especially connectors and the volume control on the motherboard.

i have the same problem but it is not software problem or ram problem coz i have checked it. it may be ur hyper threading or cooling problem which soon heat up your system.

You need to reset factory setting

http://www.mytoshiba.com.au/support/item...

This is an old post but it might help someone else who comes across this same problem.

This example works for Windows 7 -

At "Start" or "Desktop" -> "Computer" --> right click on "Properties", and then tap "Advanced system settings"

In the advanced options of the system menu, click on "Settings" for Startup and Recovery.

In Startup and Recovery, uncheck the "Automatically restart" for system failure. Click "OK" after unchecking the checkbox.

TamKat :)

This things happened in my computer.

Make sure if your computer have a virus. It causes by some kind of virus because it eat/waste the core/system file of a computer.

Or it can be happen if you have a antivirus in your computer. In some cases antivirus block system files of a computer. Then you should reinstall windows in your computer. Maybe it helps. If not then take your computer to a computer hardware store to find out what is the problem.

Thanks.

I did almost all the steps which are commonly found on the Internet.

1. Unchecked automatic restart.

2. Opened the cabinet and installed external fan to cool down.

3. Updated several times even installed OS multiple times like windows 7, 8.1, 10 Android (remix os ) & Ubuntu.

4. changed the dward value in regedit.

Still don't have any idea of restarting by itself without warning. if you find sth valueable please do share with us. Sometimes it goes so good without any error but sometimes it just restart multiple times. At last i keep it switched off directly.

Not sure if this has been solved - but I had a similar issue with random reboots... turns out it was the NEC/TOKIN capacitor... bit of a pain to replace - but it is do-able:

https://www.youtube.com/watch?v=4W2AljjO...

I have had the same problems and it was the same computer type. I would get all the files onto a USB stick or something to keep it in and changing computers. That’s my best idea lol and that’s what I did.