Why does my computer turn off without warning?
It is a sign that something is not correct if your computer system turns off automatically. There may be happened your system turns off when you are playing a game, watching videos, or performing any other task, or it may be turned off when you are doing nothing. There are various common issues that cause sudden power off computer system without warning, including Overheating, Driver Issues, Dodgy Sleep Mode, Hardware Problems, UPS / Surge Protector Failure, Insufficient Charger Voltage, Malware Infection, Battery Problems, etc. The steps listed below must be carried out within the computer system. Be aware of the dangers of ESD before you are going to opening your case.
In modern times, most computer systems are designed in a way that they turn off automatically if any of its inner parts get overheat. Commonly, heat-related issues occur at the time you are performing any hard activities, like editing a video or playing a graphically intense computer game.
First, you should check the fan if it is moving quickly and smoothly with the help of examining the back of the computer. Here you will need to open the computer case in order to inspect all other fans available inside the computer. Once you must be checked out, case fans, video card, and processor (heat sink) inside your computer. There could be a malfunctioning fan if you are listening to any abnormal noises from your computer system, for example, low grinding sound or high squealing sound.
There is a need to the attention you should not be opened the case in case your issues are on a laptop. Instead, inspect the laptop's fan, which is placed on the side or bottom of the laptop and is working correctly and blowing away hot air.. In addition, in a laptop case, you may invest in order to buy a cooler pad, which helps lower its running temperature.
You could work on the interior of your machine, which offers you an auspicious time to clean components inside the computer. Cleaning the system from the inside is very necessary as hair, dust, dirt, and other trapped debris can causes to prevent proper airflow, which led to generating much overheating. Also, ensure sure the CPU heat sink is properly placed and has the appropriate amount of thermal compound. Additionally, if you remove the processor heat sink, there is a need to take caution; you are required to clean the existing thermal compound via the processor and heat sink; also, you should be applied a new thermal compound.
You can replace the power supply if the power supply fan is very hot to the touch and not working properly. Furthermore, a computer can turn off unexpectedly if the power supply is overheating due to a malfunctioning fan. If you use the faulty power supply continuously, it can be caused to damage the computer; therefore, you should be replaced it immediately.
There is a tip; if the RPM of the fans is monitored by the BIOS, you need to enter the BIOS and be aware any error is not reporting by the BIOS. For monitoring fans in your computer, you can also use any software utilities like SpeedFan.
First, instead of removing any hardware, try to remove hardware conflicts with the help of checking Device Manager.
If any hardware component fails in the computer, it can be caused to the computer turn off unexpectedly without warning. Also, if you've recently added hardware to the computer, make sure it's not the source of the problem. Systematically removing non-essential hardware from the system is the next best solution if you have not added any latest hardware into the computer. Also, remove expansion cards that are not required for the computer to operate, for example, modem, network card, sound card. Without these cards, running the computer may help to identify your issue.
Problem with UPS or surge protector
Be aware that a UPS (uninterruptible power supply) or other surge protector will not cause problems if the computer is connected directly to the wall. Additionally, make sure UPS is disconnected, which connects a USB cable to the computer in order to manage power-saving features. You may have a faulty UPS or surge protector if this overcomes your problem. There may also be occurred some other issues with a UPS, such as a UPS software or UPS overloaded generating a power situation, which needs to turn off the computer. Make sure your UPS has the latest software updates, and there are not numerous devices connected to UPS.
Computer viruses are also caused to turn off computer systems automatically. These kinds of viruses are specifically designed to shut down the computer under certain conditions. Therefore, it may happen your computer is infected with this type of virus. Your system could be infected if it is turning off when executing a specific program at particular times of the day.
You can download a free scanner to scan your computer when you seem your system may be infected with a virus. If you have installed a virus scanner already, make sure its definitions are up-to-date. Then, scan all your computer systems.
Issue with the operating system
If, after you have followed all recommendations given above, your system continues to shut off. Maybe your system is turning off unexpectedly due to a problem at the operating system level. To examine issues related to the operating system, follow the steps given below:
If your computer does not turn off after being idle in BIOS, your operating system installation may be corrupt. We propose either deleting everything and reinstalling Microsoft Windows or restoring Windows to a time when the computer was working properly and not shutting down automatically.
Updating Vital Computer Drivers
Often, the most likely reason to turn off the computer may be outdated device drivers. You can solve this issue with the help of manually updating your Windows drivers; however, this process is usually unappropriated. It will be better if you set to update your driver automatically, and you will not be worried about when to update your driver again the next time. Software like Driver Support help to keep all of your device drivers on time updated. Although it is recommended to installing DNS servers automatically, you can manually try to configure your DNS servers.
Other failing hardware
There is a chance of hardware failing if the computer system is turned off at the time of installation of your operating system. Commonly, the video card, power supply, RAM, CPU, or motherboard are the hardware that is causing the issue. Also, you can swap all to determine if it's at fault if you have extra parts. Otherwise, you have to go to a computer shop to repair your computer system.