How can my computer turn on for 2 or 3 hours, sometimes it shuts down automatically, is it poisoned?

It's not poisoning, it's that your computer is too hot, you open your cover, see if the CPU fan doesn't move, if it doesn't move, you have to change the fan, if it moves, it means that the heat dissipation in your machine is not fast enough, just install a cooling fan. If you don't want to install it, you can remove the cover. Just blow it with a big fan.

After 2 or 3 hours of power-on, sometimes it will automatically shut down", like this abnormal shutdown is generally possible as follows.

Virus issues. Hackers can hack into your computer through system vulnerabilities, and then you can remotely control all the behaviors of your computer, including computer shutdown, and you can use antivirus software to disinfect your computer and patch the system.

System files are corrupted.

If important operating system files are lost or damaged, the computer will fail to complete the initialization and shut down automatically.

Timing software and scheduled tasks.

Some software with tasks will have the option to shut down automatically, which may have been accidentally set by the user. These software are more common, such as Thunderbolt, Express, anti-virus software, BT**, **** and so on. In the software settings, there is an action that automatically shuts down after completing a certain task.

But generally the default setting is off. The purpose is to automatically shut down the computer when a task is completed when a task is running a more time-consuming operation.

Caused by hardware issues.

For example, the power supply voltage is unstable, the socket or power plug is not in good contact, the heat dissipation is poor, and the CPU, memory, and optical drive are damaged.

Reset health quality issues.

If the reset is damaged, it will automatically shut down when it occasionally touches the case or when the computer is in normal use.

If there is an error in the startup program, if there is an error in the running of a program when Windows is started in the default state, the system will restart, and the new program with the error will be loaded, and if there is a program error in the startup item is more serious, the system will continue to start repeatedly. Solution: Press F8 when the system starts, enter safe mode, select "Startup and Failback" in Control Panel - System - Advanced, and finally remove the "Auto Restart" tick under the "System Failure" column.

2.Nowadays, motherboards generally have temperature protection control chips to prevent the CPU from overheating and burning. When the CPU temperature exceeds the warning temperature when the CPU is running at full load, the system will automatically shut down.

Of course, the CPU temperature is too high due to poor heat dissipation of the case, which will also cause automatic shutdown. Solution: Check if there is anything on the outside of the case that is causing poor heat dissipation.

Check whether the CPU fan and heatsink are not dissipating heat.

Poisoned! You can scan it with antivirus software when you turn it on! If you don't get the virus, then you should have inadvertently set up a scheduled shutdown! Hope to adopt! It is recommended to scan for viruses using a 360 first aid kit.

The reasons for the sudden shutdown of the computer are generally as follows, please check the landlord one by one:

1. Virus cause (needless to say, right?) ）

2. Turn on "Automatic shutdown and restart when the computer encounters a serious error".

3. Serious memory errors cause the system to crash (software problems).

4. Malicious program or shutdown

5. Due to the heat dissipation problem of the machine (the CPU fan is not working properly, the overall temperature of the chassis is too high, etc., the CPU fan can be replaced and the chassis cover can be opened to solve the heat dissipation problem of the machine).

6. Maybe the voltage of your home is not very stable, when the voltage is too high or drops below the minimum working voltage of the host power supply, the host will also protect and shut down.

Poor heat dissipation. Due to the influence of weather temperature or the insufficient number of revolutions of the CPU fan, the system overheats, which will lead to the automatic shutdown of the computer, it is recommended to check whether the system temperature is normal.

2.: Memory reasons. When the memory and the motherboard socket contact is loose, it may also cause the computer to shut down automatically, it is recommended to check whether the memory is plugged in tightly with the motherboard, or you can change the socket to see if it is down?

3.: Power supply issue. The lack of power supply is also an important factor in causing the computer to automatically shut down, but from this configuration, the possibility of this problem is very small.

Software factors. Computer shutdowns caused by viruses or Trojan horses also abound, especially the recent epidemic of shockwaves, which can cause the system to reboot and shut down. If you are using Windows

2000 or Windows

XP system, it is recommended that you use antivirus software to patch the blaster in time, and the general problem can be solved.

The computer shuts down automatically for no reason.

5: Check whether the CPU is overheating and whether the CPU fan tray is stable, if it is broken.

Or it is unstable, can't hold down the CPU fan, the CPU fan has insufficient heat dissipation capacity, the CPU temperature is too high, the motherboard's automatic protection function will automatically shut down, and the CPU fan's screws are loose and early!

6: The capacitor of the motherboard is deformed, and the deformation may be caused by the unstable voltage of the host, so it can be replaced.

7: When the power supply of the host fails, or the voltage fluctuates greatly, add AC regulated power supply.

8: No, it is recommended to disinfect in safe mode, and it is not possible to disconnect the network and reinstall the system to eliminate system problems.

It's possible that there's too much dust on the fan.

Causes automatic shutdown.

It's normal to clean up the dust!

It may be caused by the CPU or graphics card being too hot. Check the CPU fan and graphics card fan. See if it's turned, or change.