The Lenovo C355 all in one always restarts

The most common hardware failures are CPU fan speed running too low or CPU overheating.

Generally speaking, most motherboards on the market have CPU fan speed too low and CPU overheating protection function, which is used to automatically restart the computer if the CPU fan speed is detected to be lower than a certain value or the CPU temperature exceeds a certain degree during system operation. This way, if this feature is turned on on the computer, if there is a problem with the CPU fan, the computer will keep restarting after a period of use.

Detection method: Restore the BIOS to the default settings, turn off the protection function, if the computer does not restart, you can confirm the source of the fault.

Solution: Replace the CPU cooler.

A common hardware failure that causes a reboot: The motherboard capacitor bursts.

After a long period of computer use, some motherboard capacitors of poor quality will burst. If it is only a slight burst, the computer can still be used normally, but as the motherboard's capacitor bursting becomes severe, the motherboard will become more and more stable, and there will be a reboot failure.

The reason for the automatic restart could be:

The first case is a virus, the second case is that the temperature of the motherboard is too high due to the fan heat dissipation, the third case is that the voltage is unstable, and the fourth case is that very few computers appear, and the system has a problem and some important ones are lost. dll dynamic library file.

It is recommended that you try to re-do the system first, if the problem is still the same, it may be that the hardware is damaged, and you can only replace it with a new one!

During the warranty period, call someone to come and see.

1) Copy soft first and then hard, and re-copy.

Install the operating system, do not install software, DU patches, drivers, etc

Considering that you have the highest chance of CPU damage, your computer needs to be replaced to see if there is a problem with that device. You may not be able to recover. It needs to be sent to the repair department.

C305 doesn't have a system. Do you have a system? If it is installed, just press the switch in the lower right corner to turn it on.

My computer is the same as yours, have you solved it?

The steps to resolve the situation that causes your computer to freeze are as follows:

First: the computer power supply is insufficient, the power supply voltage is unstable, etc., or the power supply is broken.

Second: Silicone grease (that is, heat dissipation paste) should be added to the CPU fan of the computer motherboard. When the contact between the memory and the motherboard socket 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.

Use the USB disk boot tool, boot it, and install the system again if it doesn't work.

Dear users, hello.

If your computer cannot enter the system after booting, it is recommended to press F8 to enter the safe mode to see if it can enter, if it can enter the safe mode, it is recommended to uninstall the newly installed software or update, check and kill viruses, update the driver, and close the boot startup items that are not used.

If you are unable to enter safe mode, it is recommended to enter the BIOS to restore the BIOS default settings test.

If the above solutions do not work, it is recommended to back up the data and restore the system again.

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Have a great day.

Check the power supply - it's a power supply issue in general. How to solve it, you have another computer at home, remove the power supply, replace it, will not take it to the computer store for repair, this is the only way.

Solution: 1. Confirm whether the contact between the battery and the mobile phone battery connector is reliable and normal. If it is found to be loose, there is a hidden danger that will lead to automatic shutdown.

You can improve the contact between the two by adding a "pad", which is simply to squeeze the battery tightly and don't let it shake casually.

2. There is a virtual welding phenomenon in the link between the nickel strip or the protection plate and the battery cell inside the battery, which will also lead to unstable power supply and automatic shutdown. It is recommended to replace the battery in this matter.

3. If the motherboard fails, it is usually the CPU, memory slag guessing or PM (power management) problem, resulting in unstable power supply, and it needs to be repaired at this time. Most people don't know, according to the mobile phone three guarantees law, mobile phone production is guaranteed within 1 year, if the manufacturer refuses, you can call 12315 to complain or report to the consumer association.

4. Software failure, because there is a bug in the software operation, the internal mechanism automatically determines the restart, so it will be found that it will often automatically shut down and restart. You can try to upgrade the software again.

That's basically all there is to it

Solution 1:

You can follow the following tips, I hope mine is helpful to you! ~

Cause Analysis]:

1.The graphics card driver is abnormal.

2.The directx program is abnormal.

3.The hardware temperature is abnormal.

Solution]:

Solution 1: Update the graphics card driver.

2.Run "Driver Master", click the "Driver Check" button, find the driver of the graphics card, and click "Update".

3.Once installed, restart your computer.

Solution 2: Install DirectX. Open 360 Software Manager, search for "DX" in the search box, ** "Microsoft DirectX", and follow the prompts to install the code.

Solution 3: Check whether the hardware temperature is normal.

1.Open 360 Security Guard, find "Master Lu" in the "Function Collection" on the right, if you don't have it, you can add it in the "Unadded Functions".

2.On the homepage of Master Lu, observe the hardware problem on the right side after its automatic detection is completed, as shown in the following figure:

3.If marked red, it is recommended that you visit 360.com to select your region, and inquire about the merchants close to you to detect hardware conflicts, dust removal and heat dissipation, etc., and you can also communicate with the merchants to provide door-to-door services.