Windows 7: Computer randomly turns off (no reboot, no error)

My computer will randomly turn off. Only if I am using it. I can turn it on and it will sit forever, but if I use it.. Boom. Shuts completely off with no warning, no error, nothing. I need to power it back on by pressing the power button. I went to CMOS and turned on restart on system failure and it does not restart. Don't think it's running hot.. at least, my gcard is only doing 48 C which is low. Idk if it's a software issue or hardware?



I ran a scan of my computer using ESET NOD32 Smart Security = nothing found.
I will attach dxdiag. I cleaned my PC inside the best I know how.. >.<

Welcome to the forum.

Download and install this Speccy and see the temps of your computer.
Download Speccy 1.17.340 - FileHippo.com

Disable "Automatically restart" option

• Click on the start and type Sysdm.cpl, hit enter.
• Switch to Advanced tab and click Settings button of Startup and Recovery.
• Deselect the Automatically restart option and click OK to exit.

Download and install all the updates from Windows Updates.

Also replace ESET with MSE from the link below and run a complete scan to make sure you're free of viruses.

Will wait for an update after you've done these.