How to fix "computer shut down itself"? Learn and follow the repair tips to to solve "computer shut down itself"

Having your computer shut down unexpectedly is more than annoying – it can result in the loss of hours worth of hard work. When your PC shuts down by itself, it can take your unsaved spreadsheets, word processing documents and other files with it. When you restart your PC, you could find that all of those files are gone.
Dealing with the problem of unexpected shutdowns, freezes and other common problems requires you to look at a number of things. Unexpected shutdowns can be caused by a number of things, some of them hardware related and others related to the software you have loaded on your PC. Taking the time to troubleshoot each potential problem step by step is the best way to solve this annoying problem.

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New Hardware

In many cases, unexpected shutdowns and freezes are caused by a malfunctioning piece of hardware. If your PC has been running fine and just started acting up after the installation of a new hardware device, chances are that device has something to do with the problem.
The first thing you can do is remove the device and see if the problem goes away. If it does, go to the website of the hardware manufacturer and download the latest driver for the device. Use that driver to install the device, then reattach it to your computer. Many problems with unexpected shutdowns are caused by outdated drivers, and updating the driver you use should fix the problem.

Overheating CPU can Cause Computers Shutting Off by Themselves

The components inside the typical computer can get quite hot, and that buildup of heat can damage the delicate circuits and CPU inside the PC. Computers have built-in heat sensors that protect the hardware from heat damage, often by shutting down the PC when it gets too hot.
This excessive heat buildup is often caused by dust and dirt inside the computer. That dust and dirt can block the cooling fan and cause the computer to run hotter than it otherwise would. The best way to deal with this problem is to remove the computer case and use a can of compressed air to clear away that dust. If you have never cleaned your PC before, you may be surprised at just how much dust and debris is inside the case.

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Software Issues

If your shutdown problem is not caused by either overheating or a malfunctioning piece of hardware, chances are your software is to blame. Unlike hardware and heat problems, these software problems can manifest themselves in a myriad of ways. That makes diagnosing and resolving software-related issues much more difficult.

How To Repair PC Shut Off Problems

Fortunately, there are programs you can use to keep your PC running smooth. Downloading and installing a quality PC optimizer program is one of the best ways to fix and also prevent your computer shutting off by itself. A good PC optimizer program can go through your entire system, and identify hidden errors that may be on your PC. That program can then automatically fix the issue and leave you with a computer that is stable and more reliable.